Computer wont boot

Restart your computer and then press and hold F8 keys until you get Advanced Options menu screen.Use the arrow key to highlight Safe Mode, and then press Enter, your computer will boot automatically to safe mode.
If you able to start in the safe mode then Scan your computer for viruses. Some viruses can cause a black Screen , especially ones that infect the master boot record (MBR) or boot sector.
Update drivers for your hardware. black Screens are hardware or driver related so updated drivers could fix the cause of the STOP error.
Return BIOS settings to their default levels. An overclocked or misconfigured BIOS can cause all sorts of random issues, including black screen.
If it doesn't helps you then simply get the system utility program like PC Fresher that will fix windows errors that cause of black screen screen

Restart your computer, as it's restarting press f8 a boot up menu should pop up, among the options in that menu you'll see last known good configuration, select it, you're computer should hopefully start up normally, if it does not you may need to reformat, or take it into a tech shop for assistance.

change the energy settings , go to control panel energy options and there youre goin to see 4 options takeit that you need , maybe choosse DO NOTHING

If you have Vista, reboot the laptop with the vista disc in the drive. When the computer starts and you see the Acer splash screen you may have to hit F12 to get to the one time boot option and choose the cd/dvd drive...this will force the laptop to boot off the disc and not the hard drive. When the disc loads you will see a message that says "To boot off cd hit any key" touch a key and let windows boot. Once it boots it will ask you what you want to do. you first click on the next tab when it shows you the language screen, then you want to choose repair and it will tie in to the current Windows installation. When it does, click ok or next and windows will try to "heal" itself so it will boot up correctly. Once it finishes its repair, it will give you more choices. Choose to exit out and reboot the machine without the disc in and see if you boot correctly. If you do not repeat the process as before but when you are given a drop down menu of choices, this time pick restore. Look for a restore point that was before you downloaded and installed SpyBot....choose that restore point and let it do its thing....if you are successful....stay away from SpyBot.....iy is nothing but trouble.

cpu fan failure try to put a big fan where the comp vents and air flows! and see if its not shutting down!

You're probably one of thousands of victims of defective nvidia chipsets in these systems. Call HP and complain.

have u tried booting the computer with just the power supply hooked up and your battery out? iv'e had the same exact lab top and the battery went bad and the computer wouldnt do anything at all like your talking about. Even if i had the power supply hooked up and the battery. Remove the battery, and try booting it up.

There is a class action lawsuit currently being initiated against HP for this issue. The Complaint alleges that HP misrepresented and concealed material facts regarding certain laptops including a design defect, which causes the power jacks of the laptops to fail.

Sign up here:

http://www.sfmslaw.com/pages/cases.php?id=300

RESTART IN SAFE MODE.
OR
REBOOT SYSTEM, BEFORE IT BOOTS PRESS
F6 UNTIL YOU HEAR THE BEEPING NOISE, THAN STOP AND SELECT SAFE MODE
THAN CONTROL PANEL AND SELECT POWER OPTIONS
POWER BUTTON OPTIONS

basing on the information you have given here are the possible solutions:
remove any external device connected to your system (printer, external hard drive and others) if removing this does not work and still gets a blank screen with blinking cursor try to go to safe mode with networking. if successful try to download the driver for your video adapter.

when you try to start the computer , do get anything on the screen like a logo? when does the blank screen occurs, is it during the turning ON of the computer or during the windows xp logo appears on the screen?

a blank screen could be caused by the following: defective video adapter, corrupted video driver, defective memory, unknown device causing the issue like the hard drive, optical drive or other peripheral installed inside the computer.

try also using an external monitor