Instruction/ maintenance manual of the product 280 G1 HP
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Maintenance and Service Guide HP 280 G1 Microtower Business Desktop PC.
© Copyright 20 14 Hewlett-Packard Development Company, L.P. The information contained herein is subject to change without notice. Intel and Pentium are trademarks of Intel Corporation in the U.S. and other countries. Bluetooth is a trademark owned by its proprietor and used by Hewlett-Packard Company under license.
Safety warning notice WARNING! To reduce the possibility of heat -related injurie s or of overheating the device, do not place the device directly on your lap or obst ruct the device air vents.
iv Safety warning notice.
Table of contents 1 Product descript ion .... ........... .......... .......... .......... ........ .......... ......... ........... .......... ........ ... ...... ........... ........ ...... 1 2 Product Features .. ............ ........... ..........
SATA data cable . ................ .............. .................. ............. .............. .................. ............ ..... ............. ..... 19 SMART ATA drives ............... ................... ................ ..................... .
7 Troubleshooting without di agnostics ...... ............. .............. .............. ................ ............. ............ .......... .......... 62 Safety and comfort ................. .............. .................. ............... .....
Recovery using the Windows recovery USB flash drive ..................... .......................... 109 Recovery using Windows operating syst em media (purchase d separately) .............. 11 0 Backing up, restoring, and recover ing in Windows 7 .. .
1 Product description Category Description Product Name HP 280 G1 Microtower Business Desktop PC Processors Intel i3-4150 (3.5 GHz, 54 W; Intel HD Graphics 4400) Intel Pentium G3250 (3.
Category Description (1) PCIe x 16 (1) PCIe x 1 (1) PCI 2.1 External media cards HP Multi-Format Memory Card Reader slot, 6-in-1 Ports Rear I/O (4) USB 2.0 (2) USB 3.0 (1) Audio line out (1) Audio line in (1) RJ-45 (1) VGA (1) DVI-D (2) PS/2 standard (2) Serial port (1) Parallel port Front I/O (2) USB 2.
Category Description Microsoft Windows 8. 1 with Bing 64 bit Microsoft Windows 8.1 with Bing (Emerging Marke ts) 64 bit Microsoft Windows 7 Professional Edition 32 bit Microsoft Windows 7 Professional (National Academic) 32 bit Microsoft Windows 7 Professional (National Academic) 64 bit Ubuntu Linux FreeDos 2.
2 Product Features Standard Configuration Features Features may vary depe nding on the model. F or suppo rt assistance and to learn more about the hardw are and software installed on your computer mo del, run the HP Supp ort Assistant utility.
Front panel components Drive configuration may vary by model. Some models have a bezel blank coveri ng the op tical drive bay. 1 Half-height Bay - supporting an optical disk drive (optional) 5 3.5 mm Microphone Jack 2 Dual- State Power B utton 6 3.5 mm Headphone Output 3 PC Status LED 7 6-in-1 Media Card Reader (optional) 4 (2) USB 2.
Rear panel components Models with different s ets of I/O options are available, as shown in the following images. 1 Power cord connector 6 (2) USB 3.0 ports (left); (2) US B 2.0 ports 2 Serial port (optional) 7 VGA connector 3 Parallel port (optional) 8 DVI-D connector 4 Audio line in 9 (2) USB 2.
1 Power cord connector 7 VGA connector 2 Serial port (optional) 8 Serial port 3 Printer port (optional) 9 DVI-D connector 4 Audio line in 10 PS/2 keyb oard and mouse connectors 5 Audio line out 11 ( 2) USB 2.0 ports 6 (2) USB 3.0 ports (left); ( 2) USB 2.
Serial Number Location Each computer has a unique serial nu m ber and a product ID number that are located o n the exterior of the computer. Keep thes e numbers available f or use wh en contacting customer service fo r assistance.
3 Illustrated parts catalog Computer major components Computer major components 9.
Item Description (1) Front bezel * Bezel blank (optical drive) (2) Access panel (3) Power supply 180W, APFC 180W, Estar6 180W, standard (4) System board (includes replace ment thermal material) For use in models without Windows 8.1 For use in models with Windows 8.
Misc parts Item Description (1) Fan sink (includes replacement ther mal material) (2) Speaker (3) 6-in-1 card reader (4) Fan (5) Graphics card , GeForce GT705 PCIe x16, 1 GB WLAN module (6) WLAN 802.
Item Description * WLAN/Bluetooth cad dy card * Printer port kit * Serial port kit * Hood sensor * SATA data cable , 10 inch * Rubber foot kit * Antenna (for use with 802.
4 Routine care, SATA drive guidelines, and disassembly preparation This chapter provides ge neral servi ce inf ormation for the computer. Adherence to the procedures and precautions described in this chapter is essential for proper service. CAUTION: When the computer is plugged into an AC power source, voltage is always applied to the system board.
Preventing electrostatic damage to equipment Many electronic components are sensitive to ESD. Circuitry des i gn and structure determine the degree of sensitivity. The following packaging and grounding prec autions are ne cessary to preven t damage to electric components and accessories.
Recommended materials and equipment Materials and e quipment that ar e recommended f or use in pr eventing stati c electricity in clude: ● Antistatic tape ● Antistatic smocks, aprons , or sleeve p.
● Never cover the ventilation slots on th e monitor with any type of material. ● Install or enable power management functions of the operating system or other s oftware, including sleep states. Routine care General cleaning safety precautions 1. Never use solvents or flammable solutions to clean the computer.
● If you remove a key, use a specially designed ke y pu ller to prevent damage to the ke ys. This tool is available through many electronic supply outlets. CAUTION: Never remove a wide leveled key (like the spac e bar) from the keyboard. I f these keys are improperly removed or in stalled, the keyboard may not function properly.
Screws The screws used in the computer are not interchangeable. They may have standard or metric threads and may be of different lengths. If an incorrect screw is used during the reassembly process, it can damage the unit.
NOTE: Batteries, batte ry packs, and accumulators should not be disposed of to gether with the general household waste. In order to forward them to recycling or proper disposa l, please use the public collection system or return them to HP, their authorized partners, or their agents.
Cable management Always follow good cable management pr actices when working inside the computer. ● Keep cables away from majo r heat sources like the heat s ink. ● Do not jam cables on top of expansion c ards or memory modules. P rinted circuit cards li ke these are not designed to take excessive pressure on them.
5 Removal and replacement procedures Adherence to the procedures and precautions described in this chapter is essential for proper service. After completing all necessary removal and replacement procedures, run the Diagnostics utility to verify that all components operate properly.
Access panel To access internal components, yo u must remove the access pane l: 1. Prepare the computer for disassembly ( Preparation for disassembly on page 21 ) 2. Loosen the captive screw on the rear of the access panel (1) , slide the computer back approximately 12 mm (1/2 inch) (2) , and then lift the acces s panel off the computer.
Front bezel 1. Prepare the computer for disassembly ( Preparation for disassembly on page 21 ) 2. Remove the access panel ( Access panel on page 22 ) 3. Lift up the three tabs on the side of the bezel (1) , then rotate the bezel off the chassis (2) . Reverse this procedure to re place the front bezel.
Optical drive bezel blank On some models, there is a bezel blank covering th e optical drive bay. Remove the bezel blank before installing an optical drive. To remove the bezel blank: 1. Remove the access panel ( Access panel on page 22 ) 2. Remove the front bezel ( Front bezel on page 23 ) 3.
Memory Description 4-GB, PC3L-128 00 2-GB, PC3L-128 00 The computer comes with double data rate 3 synchr onous dynamic random acces s memory (DDR3/DDR3L- SDRAM) dual inline memory modules (DIMMs). DIMMs The memory sockets on the system board can be populat ed with up to four indu stry-standard UDIM Ms.
Installing DIMMs CAUTION: You must disconnect the power cord and wait appr oximately 30 seconds for the power to drai n before adding or removing memory modules. Regardless of the power-on state, voltage is alw ays supplied to the memory modules as long as the computer is plug ged into an active AC ou tlet.
The computer should automatically recognize the additional memory the next time you turn on the computer. Expansion cards The computer has two PCI Express x1 expansio n slots, one PCI Express x16 expansion slot, and one PCI Express x16 expansion slot that is do wnshifted to a x4 slot.
b. If you are removing a PCI Express x1 card, hold the card at each end and carefully rock it back and forth until the connectors pull free from the s ocket. Lift the card straight up then away from the inside of the chassis to re move it. Be sure not to scrape the card against other components.
c. If you are removing a PCI Expr ess x16 card, pull the retention arm on the back of the expansi on socket away from the card and c arefully rock the card back and forth until the connectors pull free from the socket. Lift the card s tra ight up to remove it.
Drives Description Hard drives/Solid-state drives 1-TB 500-GB Optical drives DVD±RW dri ve DVD-ROM dri ve When installing drives, follow these guidelines: ● The primary Serial ATA (SATA) hard drive must be connected to the d ark blue primary SATA connector on the system board labeled SATA0.
CAUTION: To prevent loss of work and damage to the computer or drive: If you are inserting or removing a dr ive, shut down the operating system properly, turn off the computer, and unplug the power cord. Do not remove a drive wh ile the computer is on or in standby mo de.
Removing an optical drive 1. Prepare the computer for disassembly ( Preparation for disassembly on page 21 ) 2. Remove the access panel ( Access panel on page 22 ) 3. Remove the front bezel ( Front bezel on page 23 ) 4. Disconnect the power cable and data cabl e from the back of the optical drive (1 ) .
Removing a hard drive NOTE: Before you remove the old hard dr ive, be s ure to back up the data from the old hard drive so that you can transfer the data to the new hard drive. 1. Prepare the computer for disassembly ( Preparation for disassembly on page 21 ).
Front I/O and power switch assembly 1. Prepare the computer for disassembly ( Preparation for disassembly on page 21 ). 2. Remove the access panel ( Access panel on page 22 ).
5. From the inside of the computer, remove the braided cable from the clip on the base pan. 6. If the front I/O cables are secured with a plastic tie to the sp eaker cable, cut the tie to separate the cables.
7. Disconnect the three cabl es from the following system board connectors: F_AUDIO (yellow) F_USB1 (white ) F_PANEL (black) 8. Remove the assembly from the inside of the computer.
Card reader 1. Prepare the computer for disassembly ( Preparation for disassembly on page 21 ). 2. Remove the access panel ( Access panel on page 22 ). 3. Remove the front bezel ( Front bezel on page 23 ). 4. From the inside of the computer, disconnect the card reader cable fro m the F_USB2 system board connector.
5. From the outside, f ront of the computer, re move the Torx scre w (1) that secures the card reader assembly to the chassis, and then pull the assembly away fr om the co mputer while threading the cable through the slot in the computer. 6. Remove the card reader from the inside of the computer.
Heat sink CAUTION: The bond between the heat sink and the processor may be very tight. If the computer will power on, bef ore removing the he at sink, turn on the compu ter until it warms the heat sink. Warming the heat sink lessens the bond betw een the heat sink and th e processor, thereby making separating them easier.
Processor Description Intel Core i3-4150 processor, 3.5 GHz Intel Pentium G3250 processor, 3. 2 GHz Intel Celeron G1840 processor, 2.8 GHz 1. Prepare the computer for disassembly ( Preparation for disassembly on page 21 ). 2. Remove the access panel ( Access panel on page 22 ).
Speaker 1. Prepare the computer for disassembly ( Preparation for disassembly on page 21 ). 2. Remove the access panel ( Access panel on page 22 ). 3. From the outside, front of the chassis, remove the two Torx screws that secure the speaker to the chassis.
4. If the speaker cab le is secured with a plastic tie to th e front I/O cables, cut the tie to separate the cables. 5. Disconnect the speaker cable from the sy stem board connector labeled IN T_SPKR.
6. From the inside of the chassis, remove the speaker cable from the clip on the base pan. 7. Remove the speaker. To replace the speaker, re ve rse the removal procedures.
Rear chassis fan 1. Prepare the computer for disassembly ( Preparation for disassembly on page 21 ). 2. Remove the access panel ( Access panel on page 22 ). 3. From the rear of the c hassis, remo ve the three silver Phil lips screws that secure the fan to the rear of chassis.
6. Lift the fan out of the chassi s (3) . To install the fan assembly, reverse the removal proce dure. Be sure to orient the air flow out of the computer.
Hood sensor 1. Prepare the computer for disassembly ( Preparation for disassembly on page 21 ). 2. Remove the access panel ( Access panel on page 22 ). 3. From the inside of the chassis, if the hood sensor cable is secured to the fan cable with a plastic tie (1) , cut the tie to separate the cables.
Power supply Description Power supply, 280W, 92% efficient Power supply, 280W, 90% efficient Power supply, 280W, 85% efficient (for use only in China) Power supply, 280W, standard 1. Prepare the computer for disassembly ( Preparation for disassembly on page 21 ).
4. Disconnect the power supply cabl e from the ATX_PWR system board connector and the ATX_CPU system board connector. 5. Press the tab (1) on the base pan in front of the power supply that holds it in place. 6. Slide the power supply toward the f ront of the computer (2 ) , and then lift the power su pply out of the chassis (3) .
System board Description System board for use in models without Windows 8.1 System board for use in models w ith Windows 8.1 Standa rd System board for use in models w ith Windows 8.1 Professional System board for use in NetClone models 1. Prepare the computer for disassembly ( Preparation for disassembly on page 21 ).
System board callouts Sys Bd Label Color Component Sys Bd Labe l Color Component X1PCIEXP2 Black Expansion card SATA3 Light blue Optical drive or second hard d rive X16PCIEXP Black Expansion card SATA.
6 Computer Setup (F10) Utility Computer Setup (F10) Utilities Use Computer Setup (F10) Ut ility to do the following: ● Change factory default settings.
Using Computer Setup (F10) Utilities Computer Setup can be accessed only by turning the com puter on or restarting th e system. To access the Computer Setup Utilities menu , complete the following s teps: 1. Turn on or restart the computer. 2. Repeatedly press F10 when the monitor light turn s green to access the utility.
Computer Setup—File NOTE: Support for specific Computer Setup options may vary depending on the hardware configuration. Table 6-1 C omputer Set up—File Option Description System Information Lists:.
Computer Setup—Storage NOTE: Support for specific Computer Setup options may vary depending on the hardware configuration. Table 6-2 C omputer Setup—S torage Option Description Device Configuration Lists all installed BIOS-c ontrolled storage devices.
Table 6-2 Computer Setup—Storage (continued) NOTE: MS-DOS drive lettering assignments may not a pply after a non-MS-DOS operating system has started.
Table 6-3 Computer Setup—Secu rity (contin ued) Device Security Allows you to set Device Available/D evice Hidden (default is Device Availa ble) for: ● Embedded security device ● System audio .
Table 6-3 Computer Setup—Secu rity (contin ued) System Security (these options are hardware dependent) NOTE: Available options are displayed depending on system configuration. Data Execution Prevention (enable/disable) - Helps prevent operating system se curity breach es.
Computer Setup—Power NOTE: Support for specific Computer Setup options may vary depending on the hardware configuration. Table 6-4 Computer Setup—Power Option Description OS Powe r Mana gement ● Runtime Power Management—Enable/D isable.
Computer Setup—Advanced NOTE: Support for specific Computer Setup options may vary depending on the hardware configuration. Table 6-5 Computer Setup—Advanced (for advanced users) Option Heading Power-On Options Allows you to set: ● POST mode (QuickBoot, Clear Memory , FullBoot, or FullBoot Every x Days).
Table 6-5 Computer Setup—Advanced (for advanced users) (continued) Select the Legacy device's I RQ, DMA, and I/O Range. The settin gs may not take effe ct for all oper ating systems. To hide a device from the operat ing system, see Security > D evice Security.
Table 6-5 Computer Setup—Advanced (for advanced users) (continued) ● Use Proxy (Enabled/Disabled) . When enabled, displays Proxy Address field to configure the URL of the proxy server. Default is disabled. Update BIOS via Network Allows you to use F10 Setup to check for BIOS updates from hp.
7 Troubleshooting without diagnostics This chapter provides information on how to identify and correct minor problems, such as USB devi ces, hard drive, optical drive, graphics, audio, memory, and sof tware problems. If you encou nter proble ms with the computer, refer to the ta bles in this chapter for probable causes and recommended solutions.
If it become s necessary to call for technical assistance, be prepared to do the followi ng to ensure th at your service call is handled properly: ● Be in front of your computer when you call. ● Write down the computer serial nu mber, product ID num ber, and moni tor serial n umber before calling.
● If you have installed an operating system other than the factory-installed operating system, check to be sure that it is supported on the system. ● If the system has multiple video so urces (emb.
Computer date and time display is incorrect. Cause Solution RTC (real-time clock) battery may need to be replaced. NOTE: Connecting the computer to a live AC outlet prolongs the life of the RTC battery. Reset the date and time under Control Panel (Computer Setup can also be used to update the RTC date and time).
Poor performance. Cause Solution Processor is too hot. 1. Make sure airflow to the com puter is not blocked. Leave a 10.2-cm (4-inch) clearance on all vented sides of the computer and ab ove the monitor to permit the re quired airflow. 2. Make sure fans are connected and working properly (some fans only operate when needed).
Computer powered off automatically and the Pow er LED flashes Red two times, once every second, followed by a tw o second pause, and the computer beep s two times. (Beeps stop after fifth iteration but LEDs continu e flashing). Cause Solution Processor thermal protection activated: A fan may be blocked or not tu rning.
Solving power problems Common causes and solutions for power prob lems are listed in the following table. Power supply shuts down intermittently. Cause Solution If equipped with a voltage select or, voltage selector switch on rear of comput er chassis (some models) not switched to correct line voltage (115 V or 230V).
Solving hard drive problems Hard drive error occurs. Cause Solution Hard disk has bad se ctors or has failed. 1. In Win dows 7, click Start , click Computer , and right-clic k on a drive. Selec t Properties , and then select the Tools tab. Under Error-checking click Check Now .
Nonsystem disk/NTLDR missing message. Cause Solution The system is trying to start from t he hard drive bu t the hard drive may have been damag ed. ▲ Perform Drive Protection Syst em (DPS) testing in system ROM. System files missing or not properly installed.
Solving media card reader problems Media card will not work in a digital camera after formatting it in Windows. Cause Solution By default, Wind ows will format a ny media card with a capacity greater than 32M B with the FAT3 2 format. Some di gital cameras use the FAT (FAT16 & FAT12) form at and can not operate wi th a FAT32 formatt ed card.
Do not know how to remove a media card correctly. Cause Solution NOTE: Never remove the card when the green LED is flashing After installing the media card reader and booting to Windows, the reader and the inserted ca rds are not recognized by the computer.
Blank screen (no video). Cause Solution Monitor cable is plugged into the wrong connector. Systems may have a monitor connection on both the motherboard or an add-in card. Try moving the monitor connection to a different connecto r on the back of the comput er Monitor settings in the c omputer are not comp atible with th e monitor.
Blank screen and the p ower LED flashes Red seven times, once ev ery second, followed by a two second pause, and the computer beeps seven times. (Beeps stop after fifth iteration but LEDs continue flashing.) Cause Solution System board failure (ROM detected failure prior to video).
Image is not centered. Cause Solution Position may need adjustment. Press the monito r's Menu button to access th e OSD menu. Select ImageControl/ Horizontal Position or Vertical Position to adjust the horizontal or vertical position of the image.
High pitched noise c oming from inside a flat panel monitor. Cause Solution Brightness and/or contrast settings are too high . Lower brightness and/or contr ast settings.
Sound does not come out of the speaker or headphones. Cause Solution Software volume contr ol is turned down or muted. Double-click the Speaker icon on the taskbar, then make sure that Mute is not sel ected and use the volu me slider to adjust the volume.
Computer appears to be locked up while recording audio. Cause Solution The hard disk may be full. Before recording, make sure there is enough free space on the hard disk. You can also try recording t he audio file in a compressed format. Line-in jack is not functioning properly.
Printer will not print. Cause Solution If you are on a network, you ma y not have made th e connection to the printer. Make the proper network connections to the printer. Printer may have failed . Run printer self-test. Printer will not turn on. Cause Solution The cables may not be connected pr operly.
Keyboard commands and typing are not recogn ized by the computer. Cause Solution Keyboard connector is not properly connected. Shut down the c omputer, reconnec t the keyboard to t he back of the computer, and then restart the computer. Program in use has stopped responding to commands.
Mouse does not respond to movement or is too slow. Cause Solution Mouse may need repair. S ee the Worldwide Limited Warranty for terms and conditions. Computer is in Sleep state. Press the power button to resume from Sleep state. CAUTION: When attempting to resume f rom Sleep state, do n ot hold down the power button fo r more than four seconds.
Table 7-1 Solving Hardware Installation Problems (continued) A new device is not recogn ized as part of the system. Cause Solution To access Device Manager in Wi ndows 7, click Start , select Control Panel , and then select Device Manager . To access Device Manager in Wind ows 8.
Power LED flashes Red six times, once every second, followed by a two sec ond pause, and the computer beeps six times. (Beeps stop after fifth iteration but LEDs c ontinue flashing.) Cause Solution Graphics card (some models) is not seated properly or is bad, or system board is bad.
Table 7-2 Solving Network Problems (continued) Wake-on-LAN feature is not func tioning. Cause Solution 1. From the Start screen , type c , and the n select Control Panel from the list of applications. 2. Select Network and Sharing Center , and then click th e Ethernet link next to the connection.
Table 7-2 Solving Network Problems (continued) Network status link light never flashes. NOTE: The network status light is supposed to flash whe n there is network activity. Cause Solution To access Device Manager in Wi ndows 7, click Start , select Control Panel , and then sele ct Device Manager .
Network controller stopped working when an expansion board was added to the computer. Cause Solution Network controller interrupt is shared with an expansion board. Under the Computer Setup Advanced menu, change th e resource settings for the board. The network controller requires drivers.
CAUTION: Power may still be supplied to the DIMMs when the computer is turned off (d epending on the Management Engine (ME) settings). To avoid damage to the DIMMs or the system bo ard, you must unplug the computer power cor d before attempting to reseat, inst all, or remove a memory module.
Power LED flashes Red five times, onc e every second, followed by a two second pause, and the comp uter beeps five times. (Beeps stop after fifth iteration but LEDs c ontinue flashing.) Cause Solution Memory is installed incorrectly or is bad. 1. Reseat DIMMs.
CD-ROM or DVD devices are not detected or driver is not loaded. Cause Solution Drive is not connected properly or not properly configured . See the document ation that came with t he optional device. Movie will not play in the DVD drive. Cause Solution Movie may be regionalized for a different country.
Recording or copying CDs is difficult or impossible. Cause Solution Wrong or poor quality media type. 1. Try using a slower speed when recording. 2. Verify that you are using the cor rect media for the drive. 3. Try a different brand of media. Quality va ries widely between manufacturers.
Solving front panel component problems If you encounter problems with de vices connected to the front panel, refer to the common causes and solutions listed in the following table. A USB device, headphone, or microphone is not recogn ized by the computer.
Unable to connect to the Internet. Cause Solution 3. In the Browsing history section on the General tab, click the Delete button. 4. Select the Cookies check box and click the Delete button. Windows 8.1: 1. From the Start screen , type c , and the n select Control Panel from the list of applications.
Computer will not continue after HP logo screen displays. Cause Solution Windows from starting correctly. Windows Startup Repair is one of the recovery tools in the System Recovery Options me nu. You can also create a system repair disc that cont ains the Syste m Recovery Options menu.
8 POST error messages This appendix lists the error codes, error messages , and the various indicator light and audible sequences that you may encounter during Power- On Self-Test (POST) or computer r estart, the probable source of the problem, and steps you can take to resolve the error condition.
Control panel message Description Recommended action 2. In Computer Set up, set Advanced > Device Options > NIC PXE Option ROM Download to DISABLE to prevent PXE option ROM for the internal NIC from being downloaded during POST to free more memory for an expansion card's option ROM.
Control panel message Description Recommended action 219-ECC Memory Module Detected ECC Modules not supported on this Platform Recently added memory module(s) support ECC memory error correction. 1. If additional memory was recently adde d, remove it to see if the problem remains.
Control panel message Description Recommended action 515-Power Supply fan not detec ted Power s upply fan is not connected or may have malfunctioned. 1. Reseat power supply fan. 2. Reseat fan cabl e. 3. Replace power supply fan. 601-Diskette Con troller Error Diskette co ntroller circuitry or floppy drive circuitry incorrect .
Control panel message Description Recommended action 1720-SMART Hard Drive D etects Imminent Failure Hard drive is about to fail. (Some hard drives have a hard drive firmware patch that will fix an erroneous error message.) 1. Determine if hard drive is giving correct error message.
Control panel message Description Recommended action Network Server Mode Active a nd No Keyboard Attached Keyboard failure while Network Server Mode enabled. 1. Reconnect keyb oard with computer turned off. 2. Check connector for bent or missing pins.
Interpreting POST diagnostic fr ont panel LEDs and audible codes This section covers the front panel LED codes as well as the audible codes that may occur before or during POST that do not neces sarily have an error c ode or text message associated with them.
Activity Beeps Possible cause Recommended action 2. Replace DIMMs one at a time to isolate the faulty module. 3. Replace third-party memory with HP memory. 4. Replace the system board. Red Power LED flashes six times, once every second, followed by a two second pause.
Activity Beeps Possible cause Recom mended action 1. Check that the unit is plugged into a working AC outlet. 2. Open hood and check that the power button harness is properly connected to the system board. 3. Check that both power supply cables are properly connected to the system board .
9 Password security and resetting CMOS This computer supports se curity password features, which can be established through the Comp uter Setup Utilities menu. This computer supports two security password features that are established th rough the Computer Se tup Utilities menu: setup password and po wer-on password.
1. Shut down the operating syst em properly, then turn of f the computer and any external de vices, and disconnect the power cord from the power outlet. 2. With the power cord disconnected, press the power button again to dr ain the syste m of any residual power.
3. When the key icon appears, type your current password, a slash (/) or alternate delimiter character, your new password, another slash (/ ) or alternate delimiter character, and your new password again as shown: current password/new password/new password NOTE: Type the new password carefully s ince the characters do not appear on the screen.
10 HP PC Hardware Diagnostics To help troubleshoot and diagnose failures, use the UEFI-based hard ware diagnostic solution that HP includes on all products .
1. Go to http://www.hp.com . 2. Point to Support, located at the top of the page, and then click Download Drivers . 3. In the text box, enter the product name, and then click Go . – or – Click Find Now to let HP automaticall y detect your product.
11 System backup and recovery Backing up, restoring, and recovering in Windows 8.1 or Windows 8 Your computer includes tools provided by HP an d Windows to help you sa feguard your information and retrieve it if you ever need to.
Using Reset when the sy stem is not responding NOTE: You may be prompted by User Account Control fo r your permission or password when you perform certain tasks. To continue a task, select the appropri ate option. For information about User Account Control, see Help and Support.
Recovery using Windows operating sy stem media (purchased separately) To order a Windows operating system DVD, contact support. Go to http://www.hp.com/ support , select your country or region, and follow the on-screen instructions.
1. After you successfully set up the com puter, create recovery media. This media can be used to reinstall the original operating system in cases where the hard drive is corru pted or has been replaced. See Creating recovery media on page 111 . 2. As you add h ardware and software p rograms, create system restore points.
NOTE: Do not use me dia cards for creating recovery media. The system may not be able to boot up from a media card and you may not be able to run system recovery.
1. Select Start > All Programs > Productivity and Tools > HP Recovery Disc Creator . 2. Select Windows disk . 3. From the drop-down menu, select the drive for burning the recovery media. 4. Click the Create button to start the burning process.
1. Close all open programs. 2. Click the Start button, right-click Computer , and then click Properties . 3. Click System protection , System Restore , cli ck Next , and then follow the on-scree n instructions. System Recovery WARNING! This procedure will delete a ll u ser information.
6. Under I need help immediately , click System Recovery . 7. Select Yes , and then click Next . Your computer restarts. 8. When the computer restarts, you will see the Recovery Manager welcome screen again. Under I need help immediately , click System Recovery .
6. If Recovery Manager asks if you want to run Syst em Recovery from Media or Hard Drive, select Media . On the Welcome screen, under I need help immediately , click Factory Reset . 7. If you are prompted to back up your fi les, and you have not don e so, select Back up your files first (recommen ded) , and then click Next .
After the repair is completed: 1. Eject the Windows 7 operating sy stem DVD and then insert the Driver Recovery DVD. 2. Follow the on-screen instructions to install the Ha rdware Enabling Driv ers first, and then ins tall Recommended App lications.
A Battery replacement The battery installed on the computer provides power to the real-time cl ock . When replacing the battery, use a battery equivalent to the battery originally installed on the computer. The computer has a 3-volt lithium coin cell battery installed.
8. To insert the new battery, slide one edge of the replac ement battery under the lip of the holder with the positive side up. Push the other edge down until the clamp s naps over the other edge of the battery (2) . 9. Replace the access panel. 10. Plug in the computer and turn on power to the computer.
B Power Cord Set Requirements The power su pplies on some co mputers have ex ternal power switch es. The v oltage select switch feature on the computer permits it to operat e from any line voltage b etween 1 00-120 or 220-240 volts AC.
Country-Specific Requirements Additional requirements specific to a country are shown in parentheses and explained below. Country Accrediting Agency C ountry Accrediting Agency Australia (1) Austria (.
C Statement of Volatility HP confirms that Intel-based business desktop HP 280 G1 Microtower Business DT PC contains DDR3 volatile memory (memory amount depends on the customer con figuration).
10. To clear the Setup or Power-On passwords if set , and clear any othe r settings, power down the computer and remove the AC power cord and the computer hood. 11. Locate the green two pin password jumper on header E49 (labeled PSWD) and remove it. 12.
D Specifications Specifications Chassis Height Width Depth 14.13 in 6.5 in 13.98 in 35.88 cm 16.5 cm 35.5 cm Approximate Weight 15.51 lb 7. 05 kg Temperature Range Operating Nonoperating 50° to 95°F -22° to 140°F 10° to 35°C -30° to 60°C NOTE: Operating temperature is derated 1.
ER e c y c l i n g When a non-rechargeable or rechargeable battery has reached the end of its useful life, do not dispose of the battery in general household waste.
Index A access panel illustrated 10 locked 65 removal 22 audible cod es 100 audio problems 76 audio, product description 1 B backup and recovery, Windo ws 7 110 Backup and Restore, Windows 7 113 backu.
HP PC Hardware Diagnostics (UEFI) downloading 106 HP Recovery Disc Creator, using 112 I installing battery 118 drive cables 30 expansion card 27 memory 25 Internet access problems 91 K keyboard cleani.
removal and replacement card reader 37 front I/O panel 34 heat sink 39 hood sensor 46 power supp ly 47 processor 40 rear chassis fan 44 speaker 41 system board 49 removing access panel 22 battery 118 .
An important point after buying a device HP 280 G1 (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought HP 280 G1 yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data HP 280 G1 - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, HP 280 G1 you will learn all the available features of the product, as well as information on its operation. The information that you get HP 280 G1 will certainly help you make a decision on the purchase.
If you already are a holder of HP 280 G1, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime HP 280 G1.
However, one of the most important roles played by the user manual is to help in solving problems with HP 280 G1. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device HP 280 G1 along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
