Instruction/ maintenance manual of the product CQ57 HP (Hewlett-Packard)
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Compaq Presario CQ57 Notebook PC Maintenance and Service Guide.
© Copyright 2011 Hewlett-Packard Development Company, L.P. AMD, the AMD Arrow log o, and combinations thereof, are trademarks of Advanced Micro Devices, Inc. Bluetooth is a trademark owned by its proprietor and used by Hewlett-Packard Company under license.
Safety warning notice WARNING! To red uce the possib ility of hea t-related i n juries or of overheating the device, do not place the device directly on your lap or obstruct t he device air vents.
iv Safety warning notice.
Table of contents 1 Product description ............. ............... .............. ............. ............. ................ .............. ...... ... 1 2 External component identification .......... ............ ............. ........... .......
Packaging a nd transpo rting guidel ines ........................................ 32 Component re placemen t procedur es ........................................................ ................................ 34 Service tag ........ ....... ........
7 Backup and recovery ............... ........................... ................... .......................... ............... 8 9 Restore .. ................. .............. ............ .............. ............... .............. ............. .
viii.
1 Product description Category Descriptio n Computer models equipped with an AMD processor Computer models equipped with an Intel processor Produc t Name Compaq Presario CQ57 No tebook PC √√ Proces sors AMD® E350 1.60-GHz processor (dual core, 18-W) √ AMD E240 1.
Category Descriptio n Computer models equipped with an AMD processor Computer models equipped with an Intel processor Discrete gr aphics : AMD Radeon HD 6370M Graphics with 512-MB of discrete video me.
Category Descriptio n Computer models equipped with an AMD processor Computer models equipped with an Intel processor Customer-accessible √√ Serial ATA √√ Supports the following hard drives: ● 500-GB, 5400-rpm ● 320-GB, 5400-rpm ● 250-GB, 5400-rpm √√ Optical drive (select models only) Fixed √√ Serial ATA √√ 12.
Category Descriptio n Computer models equipped with an AMD processor Computer models equipped with an Intel processor External me dia card HP Multi-Format Digital Media Reader supports the following d.
Category Descriptio n Computer models equipped with an AMD processor Computer models equipped with an Intel processor Support for the fo llowing batteries : ● 6-cell, 55-Whr, 2.
2 External component identification Display Item Componen t Description (1) WLAN antennas (2)* Send and receiv e wireless signals to communicate with WLANs. NOTE: Select computer models only have one WLAN antenna. (2) Webcam light On: The webcam is in use.
Item Componen t Description (5) Internal display switch Turns off the disp lay and initiates Sleep if the display is closed while the power is on. NOTE: The internal display switch is not visible from the outside of the computer. *The antennas are not visible from the ou tside of the computer.
Keys Item Componen t Description (1) esc key Displays system informati o n when pressed in combination with the fn key. (2) fn key Displays system informati o n when pressed in combination with the esc key. (3) Windows logo key Displays the Windows Start menu.
Lights Item Componen t Description (1) TouchPad light ● Amber: The TouchPad is off. ● Off: The TouchPad is on. (2) Caps lock light ● White: Caps lock is on. ● Off: Caps lock is off. (3) Power ligh t ● White: The computer is on. ● Blinking white: The com puter is in the Sleep state.
TouchPad Item Componen t Description (1) TouchPad light ● Amber: The TouchPad is off. ● On: The TouchPad is on. (2) TouchPad on/off button Turns the TouchP ad on and off. Quic kly double-tap the TouchPad on/off button to tu rn the TouchPad on and off.
Left side Item Componen t Description (1) External monitor port Connects an external VGA monitor or projector. (2) Vents (2) Enable airflow to cool internal components. NOTE: The computer f an starts up automatically to cool internal components and preven t overheating.
Right side Item Componen t Description (1) Optical drive (select models only) Reads and writes to an optical disc. (2) Optical drive light ● On: The optical drive is in use. ● Off: The optical drive is idle. (3) USB ports (2) Connect optional USB devices.
Bottom Item Componen t Description (1) Battery bay Holds the battery. (2) Battery release latch Releases th e battery from the battery bay. (3) Vents (5) Enable airflow to cool internal components. NOTE: The computer f an starts up automatically to cool internal components and preven t overheating.
3 Illustrated parts catalog Service tag When ordering pa rts or reques ti ng information, p rovide the computer serial number and model description provided on the service tag. Item Component Description (1) Product name This is the product name affixed to the front of the computer.
Item Component Description (3) Part number/Product number (p/n) This numb er provides specific information about the product’s hardware componen ts. The part number helps a service technician determ ine what components and parts are needed. (4) Warranty period This number describes the duration of the warranty period for the computer.
Computer major components Item Component Spare part number (1) 15.6-in , high definition (HD), light-emitting diode (LED), BrightView display assembly (includes microphone and wireless antenn a transc.
Item Component Spare part number (2) Key board (includes keyboard cable): For use with all computer models: For use in Belgium 646125-A41 For use in Canada 646125-121 For use in the Czech Republic 646.
Item Component Spare part number (6c) Hard drive connector cable NOTE: See Cable Kit on page 20 for more Cable Kit spare part information. (7) USB bo ard (includes cable) 646128-001 (8) Power connecto.
Item Component Spare part number For use only with computer models equi pped with an Intel Pentium processor and a graphics subsystem with UMA video memory 646181-001 For use only with computer models.
Cable Kit Item Component Spare part number Cable Kit , includes: 646119-001 (1) TouchPad cable (2) Optical drive connector cable (3) Hard drive connector cable 20 Chapter 3 Il lustrated parts catalo g.
Display assembly subcomponents Item Component Spare part number (1) Display b ezel: For use with computer models equipped with a webcam and a microphon e 646117-001 For use with computer models equipped only with a microph one 646118-001 (2) Display hing e covers (2) 646124-001 (3) 15.
Item Component Spare part number (8) Display enclos ure 646113-001 Display Screw Kit (not illustrated, includes Mylar s crew covers and screws) 646134-001 Mass storage devices Item Component Spare part number (1) Hard drive (2.
Miscellaneous parts Component Spare part n umber HP Smart AC adapter: 65-W RC V HP Smart AC adapter for use will all computer models 609939-001 For use only with computer mo dels equipped with an Inte.
Plastics Kit Item Component Spare part number Plastics Kit , includes: 646131-001 (1) Hard drive compartment cover (includes on e captive screw, secured by a C-clip) (2) Memory module/wireless module .
Sequential part number listing Spare part number Description 490371-001 Power cord for use with all com puter models in North America (3-pin, black, 1.83-m) 490371-011 Power cord for use only with computer models equipped with an Intel processor in Australia (3 - pin, black, 1.
Spare part number Description 621569-001 4-GB memory module (PC3, 10600, 1333-MHz) 622641-001 250-GB, 5400-rpm hard drive (2.5-in, 7.0-mm, SATA; does not include hard drive connector cable, hard drive bracket, or screws) 622643-001 320-GB, 5400-rpm hard drive (2.
Spare part number Description 646125-001 Keyboard for use with all computer models in the United States (includes keyboard cable) 646125-031 Keyboard for use with all computer models in the United Kin.
Spare part number Description 646132-001 RTC battery (includes cable and doubl e-sided tape) 646133-001 Screw Kit 646134-001 Display Screw Kit (includes Mylar screw covers and screws) 646135-001 Therm.
4 Removal and replacement procedures Preliminary replacement requirements Tools required You will need the fo llowing tools to comple te the removal and replacement procedures: ● Flat-bladed screwdr.
Drive handling CAUTION: Drives are fragil e componen ts that must be handled with care. To prevent damage to the computer, damage to a drive, or loss of information, observe these precautio ns: Before removing or inserting a hard drive, shut down th e computer.
CAUTION: To prevent damage to the computer when you are removing or inst alling internal components, observe these prec autions: Keep components in their electr ostatic-safe containe rs until you are ready to install them. Before touching an elec tronic component, dis charge stat ic electricity by using the guid elines describ ed in this section.
Packaging and transporting guidelines Follow these grounding guidelin es when packaging and transporting equipment: ● To avoid hand contact, transport produc ts in static-safe tubes, bags, or box es. ● Protect ESD-sensitive parts and as se mblies with conductive or ap proved containers or packaging.
Equipment guidelines Grounding equipment must include eith er a wrist st rap or a foot strap at a grou nded workstation. ● When seated, wear a wrist strap co nnected to a gr ounded system. Wrist straps ar e flexible straps with a minimum of one megohm ±1 0% resistance in the ground co rds.
Component replacement procedures This chapter provides removal and repla cement procedures. There are as many as 75 screws that must be re moved, replaced, o r loosened when servicing the computer. Make special note of each screw size and location during removal and r eplacement.
Item Component Description (4) Warranty period This number describes the duration of the warranty period for the computer. (5) Model description This is the alphan umeric identifier used to locate documents, drivers, and support for t he computer. Computer feet The computer feet are adhesive-backed rubber pad s.
Battery Description Spare part n umber 6-cell, 55-Whr, 2.55-Ah Li-ion battery 593554-001 6-cell, 47-Whr, 2.20-Ah Li-ion battery 593553-001 Before disass embling the computer, follow the se steps: 1.
To insert the battery: 1. Align the tabs on the rear edge of the battery with the notches on the rear edge of the battery bay. 2. Pivot the front edge of the battery down into the battery bay until it is seated . (The battery release latch will automatica lly lock into place.
2. Lift the rear edge of the memory mo dule/wireless modu le compartment cover (2) up and forward until it rests at an angle. 3. Remove the memory module/wirel ess module compartment cover. The memory module/wireless module compartment cover is available in th e Plastics Kit, spare part number 646131-00 1.
8. Remove the two Phillip s PM2.0×3.0 s crews (1) that secure the bracke t to the optical drive. 9. Remove the optical dr ive br acket (2) . Reverse this procedure to reassemble and install the optical dri ve.
WLAN module Description Spare part n umber Atheros AR9002WB-1NGB 802.11b/g/n 1x1 WiFi and Bluetooth 2.1+EDR Combo Adapter (BT3.0+HS ready) 593127-001 Ralink 5390GN 802.11b/g/n 1x1 WiFi Adapter 630703-001 Realtek 8188BC8 802.11a/b/g/n 2x2 WiFi and Bluetooth 3.
3. Remove the WLAN module by pulling the mo dule away from the slot at an angle (3) . NOTE: The WLAN module is designed with a notch (4) to prevent incorrect installation into the WLAN module socket.
Memory module Description Spare part n umber 4-GB (PC3, 10600, 1333-MHz) 621569-001 2-GB (PC3, 10600, 1333-MHz) 621565-001 1-GB (PC3, 10600, 1333-MHz) 639738-001 Before removing a memory module, follow these steps: 1.
Hard drive NOTE: The hard drive spare part kit does not includ e the hard drive connector cable, bracket, or screws. The hard d rive connector cable is included in the Cable Kit, spare p art number 646119-001. The hard drive br acket and screws ar e included in the Hard Drive Hardware Kit, spar e part number 646122-0 01.
2. Lift the rear edge of the hard drive compartment cover (2) up and forward until it rests at an angle. 3. Remove the hard drive compartment cover. The ha rd drive compartment cover is availa ble in the Plastics Kit, spare part number 646131-001. 4. Disconnect the hard drive connect or cable (1) fr om the system b oard.
8. If it is necessary to replace the hard drive connector cable (1) , the hard drive screws (2) , or the hard drive bra cket (3) , remove and replace the components.
Keyboard NOTE: The keyboard sp are part kit includ es a keyboard cable. Description Spare part number Description Spare part number For use with all computer models: For use in Latin America 646125-16.
Remove the keyboard: 1. Remove the Phillips PM2.5×6.0 s crew that secure s the keyboard to the computer. 2. Rest and secure the computer on its left side.
5. Turn the computer ri ght-side up with the front toward you. 6. Lift the rear edge of the keyboard (1) , and then swing the k eyboard up and forward (2) until it rests upside down on the palm re st.
Top cover NOTE: The top cover spare part kit in cludes the TouchPad and TouchPad cable. Description Spare part n umber Top cover (includes TouchPad and TouchPad cable) 646136-001 Before removing the top cover, follow these s teps: 1. Shut down the co mputer.
4. Remove the seven Phillips PM2.5×6.0 scr ews in the battery bay and the hard drive bay that secure the top cover to the computer. 5. Remove the two Phillip s PM2.5×9.0 s crews (1) and the three Phillips PM2.0×3.0 screws (2) in the battery bay that secure the top cover to the computer.
9. Remove the Phillips PM2.5×6.0 screw t hat secures the top cover to the computer. 10. Lift the rear edge of the top cover (1) until the left and right sides disengage from the base enclosure.
11. Remove the top cover (2) . Reverse this procedure to install the top cover. 52 Chapter 4 Removal and replacement p rocedures.
Power button board Description Spare part n umber Power button board (includes cable) 646129-001 Before removing the powe r button board, follow these s teps: 1. Shut down the co mputer. If you are uns ure whether th e computer is off or in Hibernatio n, turn the computer on, and then shut it down through the operating system.
TouchPad button board Description Spare part n umber TouchPad button board (includes cable) 646130-001 Before removing the TouchPad butto n board, follow these steps: 1. Shut down the co mputer. If you are uns ure whether th e computer is off or in Hibernatio n, turn the computer on, and then shut it down through the operating system.
4. Remove the TouchPa d button bo ard (4) and cables from the top cover. Reverse this procedure to install t he TouchPad button board and cable. Component replacement proced ures 55.
USB board Description Spare part n umber USB board (includes cable) 646128-001 Before removing the USB board, follow the se steps: 1. Shut down the co mputer. If you are uns ure whether th e computer is off or in Hibernatio n, turn the computer on, and then shut it down through the operating system.
Power connector cable Description Spare part n umber Power connector cable 641394-001 Before removing the power connector cable, follow these step s: 1. Shut down the co mputer. If you are uns ure whether th e computer is off or in Hibernatio n, turn the computer on, and then shut it down through the operating system.
5. Turn the computer ri ght-side up, with the front toward you. 6. Open the computer. 7. Remove the two Phillip s PM2.5×6.0 s crews (1) that secure the power connector and bracket to the comp uter. 8. Remove the power connector bracket (2) . 9. Remove the power connector (3) .
Speakers Description Spare part n umber Speaker Kit (includes left and right speakers and cable) 647315-001 Before removing the speakers , follow these steps: 1. Shut down the co mputer. If you are uns ure whether th e computer is off or in Hibernatio n, turn the computer on, and then shut it down through the operating system.
Reverse this proced ure to install t he speakers. Optical drive connector cable NOTE: The optical d rive connector cable i s included in the Cab le Kit, spare pa rt number 646119-0 01. Before removing the optical drive co nnector cable, follow these s teps: 1.
Display assembly Description Spare part n umber 15.6-in, HD, LED, BrightView displ ay assembly (include s microphone and wireless antenna transceivers and cables ) Equipped with webcam 645095-001 Not equipped with webcam 645094-001 Before removing the display asse mbly, follow these steps: 1.
4. Remove the disp lay assembly (4) . 5. If it is necessary to replace the disp lay bezel or any of the display assembly subcomponent s: a. Remove the two My lar scr ew covers (1) and the two Phillips PM2.5×4.0 screws (2) that secure the display bezel to the display assembly.
6. If it is necessary to replace the webcam /mic rophone module or microphone module: a. Detach and release the module (1) as far as the module cable allows. (The modu le is attached to the display enclos ure with double-sided tap e.) b. Disconnect the module cable (2) from the module .
b. Remove the hinge covers (2) . The hinge covers are available u sing spare part number 646124-001. 8. If it is necessary to re place the di splay panel: a. Remove the two Phillips PM2.5×4 .0 screws (1) and four Phillips PM2.5×5.0 screws (2) that secure the display panel to the d isplay enclosure.
b. Lift the top edge of the display panel, a nd then swing it up and forward until it rests upside down in front of the display enclosure. c. Release the adhe sive strip (1) that secures the display panel ca ble to the display panel, and then disconnect t he display panel cable (2) from the display panel.
b. Remove the display hinges (2) . The display hinges include the display hinges and brack ets and are available using s pare part number 646123-001. 10. If it is necessary to replace the di splay panel cab le: a. Release the tabs (1) built into the display enclosure shie lding that secure the display panel cable to the displa y enclosure.
11. If it is necessary to replace the wireless ante nna cable and transceiver: a. Release the wireless antenna transceiver (1) from the displa y enclosure. (The wireless antenna transcei ver is attached to the di splay enclosure wit h double-sided t ape.
System board NOTE: The system board sp are part kit includes re placement thermal material. Replacement thermal mate rial is also available i n the Thermal Material Kit, sp are part numbers 650277-001.
When replacing the system board, be sure that the following components are removed from the defective system board and installe d on the replacement system board: ● Memory module (see Memory module .
4. Remove the system board (3) by sliding it up and to t he right at an angle. NOTE: A heat sink is attached to the base encl osure to service a component on the bottom of the system board.
RTC battery Description Spare part n umber RTC battery (includes cable and double-sided tape) 646132-001 Before removing the RTC battery, follow these step s: 1. Shut down the co mputer. If you are uns ure whether th e computer is off or in Hibernatio n, turn the computer on, and then shut it down through the operating system.
3. Detach the RTC battery (2) from the system boar d. (The RTC battery is attach ed to the syst em board with d ouble-side d tape.) 4. Remove the RTC battery.
Fan/heat sink assembly NOTE: The fan/heat sink ass embly spare part ki t includes replacement thermal material. Replacement thermal material is also available in the Thermal Material Ki t, spare part .
Remove the fan/heat sink assembly: 1. Disconnect the fan cable from the sy stem board. 2. Turn the system board up side down, with the front toward you.
NOTE: The following illustration shows the fan/heat sink assembly re moval process on a compute r model equipped wi th an Intel processor, the I ntel HM65 or HM5 5 chipset, and a graphics subsyst em with discrete memory.
NOTE: The following illustration shows the fan/heat sink assembly re moval process on a compute r model equi pped with an I ntel processo r, the Intel HM45 chipset, and a graphics subsystem w ith UMA memory.
● Thermal paste is used on the processor (1) and the heat sink section (2) that services it ● A thermal pad is used on the Northbridge chip (3) and the heat sink section (4) that servic es it NOTE.
● Thermal paste is used on the processor (1) and the heat sink section (2) that services it ● A thermal pad is used on the Northbridge chip (3) and the heat sink section (4) that servic es it NOTE: The followi ng illustration show s the replacem ent thermal material locations on a computer model equi pped with an I ntel Celeron pr ocessor.
Processor NOTE: This section applies only to co mputer models equippe d with an Intel processor. NOTE: The processor spare p art kit includes replac ement thermal material.
2. Lift the processor (2) straight up, and then remove it. NOTE: The gold triangle (3) on the proces sor must be aligned with the triangle icon (4) embossed on the processor socket when yo u install the processor. Reverse this procedure to install the processor.
5 Setup Utility (BIOS) and System Diagnostics Using Setup Utility Setup Utility, or Basic Input /Output System (BIOS) , controls communication between all the input and output device s on the system (such a s disk drives , display, keyboard, mouse, and printer).
Navigating and select ing in Setup Utility To navigate and select in Setup Utilit y, follow these steps: 1. Turn on or restart the com puter, and then press esc while the “Pre ss the ESC key for Startup Menu” message is displaye d at the bottom of the screen.
Restoring factory settings in Setup Utility NOTE: Restoring def aults will not change the hard drive mode. To return all settings in Setup Utility to the values that were set at the factory, f ollow these steps: 1.
Determining the BIOS version To determine whether available BIOS updates contain later BIOS versio ns than those currentl y installed on the computer, you need to know the vers ion of the system BIOS currently installed.
BIOS installati on procedures vary. Follow any instructions that are display ed on the screen after the download is complete. If no instructions are di splayed, follow these s teps: 1. Windows 7 —Open Windows Explo rer by selecting Start > Computer .
6 Specifications Computer specifications Metric U.S. Dimensions Depth 24.7 cm 9.7 in Width 37.6 cm 14.8 in Height (front to back) 3.1 to 3.6 cm 1.2 to 1.4 in Weight 2.49 kg 5.49 lb Input power Operating voltage 18.5 V dc @ 3.5 A - 65 W or 19.0 V dc @ 4.
15.6-inch display specifications Metric U.S. Dimensions Height 19.6 cm 7.72 in Width 34.7 cm 13.66 in Diagonal 39.8 cm 15.67 in Number of colo rs Up to 16.8 million Contrast ra tio 200:1 (ty pical) Bright ness 200 nits (typical) Pixel resolution Pitch 0.
Hard drive specifications 500-GB* 320-GB* 250-G B* Dimensions Height 9.5 mm 9.5 mm 7.0 mm Length 100.4 mm 100.4 mm 100.4 mm Width 69.9 mm 69.9 mm 69.9 mm Weight 110 g 110 g 110 g Interface type SATA SATA SATA Transfer rate Synchronous (maximum) 1.1 GB/sec 1.
7 Backup and recovery Your computer inclu des tools provided by the op erating system and HP to help you safeguard you r information and re store it if ever ne eded.
Creating restore media HP recommends that you create ei ther a set of recove ry discs or a rec overy fl ash drive to be sure that you can restore your computer to its original factory state if the hard drive fails, or if for any re ason you cannot restore using the recovery partition tools.
Performing a system restore Recovery Manager software allows you to repair or restore the computer to its original facto ry state. Recovery Manager works from recove ry discs, a recovery flash driv e, or from a dedicated recovery partition (select models only) on the hard drive.
Restoring using the restore media 1. If possible, back up all personal files. 2. Insert the fir st recovery disc in to the opti cal drive on your computer or an optional external optical drive, and then res tart the computer. – or – Insert the recovery flash drive into a USB port on your computer, and then restart the computer.
Backing up and recovering your information It is very important to back up your files and keep any new software in a safe place. As you add new software and data files, continue to create backups on a regular basis. How completely you are ab le to recover your system depends on how recent your backup is.
Using Windows Back up and Restore Guideline s: ● Be sure that the computer is connected to AC power before you start the bac kup process. ● Allow enough time to complete the back up process. Dep ending on file sizes, it may take over an hour. To create a backup: 1.
Create a system restore point 1. Select Start > Control Panel > System and Security > System . 2. In the left pane, click System Protection . 3.
8 Power cord set requirements The wide-range input fe ature of the computer permit s it to operat e from any line volt age from 100 t o 120 volts AC, or from 220 to 240 volts AC. The 3-conductor power cord set in cluded with the computer meets the requ irements for use in the country or region where the equipment is purchased.
Requirements for specific countries and regions Country/region Accredited agency Applicable note number Australia EANSW 1 Austria OVE 1 Belgium CEBC 1 Canada CSA 2 Denmark DEMKO 1 Finland FIMKO 1 Fran.
9 Recycling Battery When a battery has reached the end of its useful life , do not dispose of th e battery in general household waste. Follow the local laws and regulati ons in your area for computer battery dis posal. Display WARNING! The backlight c ontains mercury.
Perform the following steps: 1. Remove all screw covers (1) and screws (2) that secure the display bezel to the display assembly. 2. Lift up and out on the le ft and right inside edges (1) and the top and bottom i nside edge s (2) of the display bezel unti l the bezel disengages from the dis play assembly.
4. Disconnect all display panel cables (1) from the display inverter and remove the inverter (2) . 5. Remove all screws (1) that secure the displ ay panel assembly to the display encl osure. 6. Remove the disp lay panel assem bly (2) from the display enclosu re.
10. Remove the display panel frame (2) from the display panel. 11. Remove the screws (1) that secure the backlight cover to the display panel. 12. Lift the top edge of the backlight cover (2) and swing it ou tward. 13. Remove the backli ght cover. 14.
15. Remove the backlight cables (1) from the clip (2) in the display panel. 16. Turn the display panel upside d own. 17. Remove the backlight frame from the display panel. WARNING! The backlight contains mercury. Exercise caution when removing and handling the backlight to avoid damaging this componen t and c ausing expo su re to the mercury.
18. Remove the backlight fr om the backlight frame. 19. Disconnect the display cable (1) from the LCD panel. 20. Remove the screws (2) that secure the LCD panel to the display rear panel. 21. Release the LCD pane l (3) from the display rear panel. 22.
Index A AC adapter light 12 AC adapter, spare p art numbers 23, 25 Action keys 8 antenna locations 6 removal 67 spare part number 21, 26, 67 Antenna Kit, spare pa rt number 21, 26, 67 audio, product d.
grounding 30 packagin g 32 transpo rting 32 workstation 32 H hard drive precautio ns 30 product desc ription 2 removal 43 spare part numbers 19, 22, 26, 43 specifications 88 hard drive ba y 13 hard dr.
removal 79 spare part numbers 18, 25, 26, 79 product description audio 3 chipset 1 display panel 2 Ethernet 3 external media cards 4 graphics 1 hard drives 2 keyboard 4 memory module 2 microphone 3 op.
An important point after buying a device HP (Hewlett-Packard) CQ57 (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 (Hewlett-Packard) CQ57 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 (Hewlett-Packard) CQ57 - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, HP (Hewlett-Packard) CQ57 you will learn all the available features of the product, as well as information on its operation. The information that you get HP (Hewlett-Packard) CQ57 will certainly help you make a decision on the purchase.
If you already are a holder of HP (Hewlett-Packard) CQ57, 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 (Hewlett-Packard) CQ57.
However, one of the most important roles played by the user manual is to help in solving problems with HP (Hewlett-Packard) CQ57. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device HP (Hewlett-Packard) CQ57 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
