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As with any hardware on your laptop, the fan may stop working. Your laptop's fan serves as the dedicated cooling system for the CPU. If your CPU overheats it will cause severe damage to the motherboard. It may also cause electrical damage hardware devices nearby the CPU. Most HP laptops are designed with CPU fan located on the top side of the motherboard. There are a few HP laptops with the CPU fan located on the bottom side of the motherboard.
Shut down your laptop, and fold down the LCD screen. WARNING: Before you start troubleshooting remember that you are dealing with electricity that can KILL. http://www.kitchentablecomputers.com/static.php - rules Only work inside the computer case when the power has been switched off and disconnected. Never open the power source. Some of the below steps recommend removing physical parts within the computer. While in the computer it is highly recommend that you be aware of ESD and its potential hazards Disconnect the AC power cable and any external devices. Place the laptop face down, and rotate the computer so the front opening is facing forward. Locate the battery pack in the upper right or left corner of the laptop. The location depends on your laptop model. Press on the battery's release button, and then lift the battery out of its compartment. Place the laptop face up and open the LCD screen all the way. Insert a flat-head screwdriver into the right side of the keyboard cover. The keyboard cover is a thin strip of plastic situated between the keyboard and LCD. Gently pry the cover from the laptop, and set it aside. Remove the Phillips-head screws located above the top row of keyboard keys. These screws secure the keyboard in place. Grasp the top edge of the keyboard, and then place the keyboard face down over the palm rest area. Disconnect the keyboard's large ribbon cable from the motherboard. Remove the keyboard from the laptop. Locate the small circuit board near the top of the laptop's upper casing above the keyboard compartment. Disconnect the cables from the circuit board. Remove the Phillips-head screws securing the circuit board in place. Close the LCD screen. Place the laptop vertically. Position the laptop with the back of the LCD hinges facing upward. Remove the single Phillips-head screw from the back of each LCD hinge. Place the laptop face up, and open the LCD screen until it is in the 180-degree position. Locate the LCD video cable extending from the left side of the LCD panel. Disconnect the cable from the motherboard. Remove the Phillips-head screws from each LCD hinge. Lift the LCD screen panel off of the laptop. Set it aside. Locate the CD/DVD drive inside the right section of the laptop's upper casing. Remove the Phillips-head screws securing the drive in place. Grasp the face of the drive and slide it out of its compartment. Place the laptop face down. Remove all remaining Phillips-head screws from the bottom casing of the laptop. This includes any screws inside the battery compartment, and on the back panel of the laptop. Flip the laptop over, and remove the remaining Phillips-head screws from the laptop's top casing. Locate the touchpad cable situated just above the touchpad area. Disconnect the cable from the motherboard. Remove the top casing from the laptop's base. Locate the CPU fan in the upper left corner of the motherboard. Remove the Phillips-head screws securing the fan to the motherboard. Disconnect the fan's power cable from its connector on the motherboard. Lift the cooling fan out of the laptop and set it aside. http://www.youtube.com/watch?v=qcy0YSOmX4EHow to Clean the Fans on HP DV4 - OverheatingThis might not be you laptop but it might give you some insight. Hope this helps.
If the computer is not reaching the BIOS screen one of the components is most likely faulty. I strongly suspect that it is either the Motherboard or the CPU. If you have made sure the CPU is seated correctly you may need to try alternate motherboards or try the CPU in an alternate computer/Visa-Versa. Hope this helps you troubleshoot and good luck.
Unfortunately on almost all new keyboards the print screen will not just print out a page of text. What print screen does now is that if you press the print screen button an image of what you are seeing will be copied to the clipboard so that you can just go into any program and click paste and you will get the monitor display that was visible. I hope this helps.
you change password on bios or Windows Operation System.
On bios you can, reset password if have skill to open notebook case.
the fowing steps may help you.
Power OFF and battery out.
1st: look for keyboard lock plastics, normaly on top keyboard. take this out , carfully,dont break-it.
2nd: normaly has small screws on top/bottom of keyboard, also take-it out.
3rd: keyboard out carfully, look for small plastics/connectors and cables (very fragile)
4rd: look for small battery inside, normaly nearby CPU or VGA Chip, take-it out .
wait 1min and put all it back again, carfully.
And test for bios passw (you must configure again date and time).
On windows you must boot computer and press F8, while booting before appear 1st win image.
then chose safe mode, and enter as adminstrator user name and password (default none), then go to control panel and choose users icon and configures the users you need .