HP laptop doesn't boot, endlessly restarts

Question

My HP Pavilion dv9000 laptop (running Windows XP) won't boot - it just keeps going into a restart cycle.

I've tried to turn it on without the hard drive inside but I still get to the same rebooting sequence. It doesn't even show the BIOS details before it restarts. I'm also unable to boot into safe mode as the computer doesn't get that far before restarting.

The restarting happens within a matter of two seconds - it doesn't have time to display anything on the screen hence why it does not display the BIOS. This keeps repeating until I take the battery out. Not much more happens than that.

Solution

It seems to be the graphics chip on the motherboard is faulty, and needs replacing.

Comments

[Tog]

Please add the model number to your post.

[CharlieRB]

If it doesn't show BIOS, how do you know it restarts? Have you tried tapping F8 as it starts to get to the boot menu? Some more detail would help us help you.

[ben950]

because it restarts with a matter of 2 seconds it doest have time to display anthing on the screen hence why it does display bios. i mean what other details can i give u i turn it on it restarts after 2 seconds and keeps repeating this untill i take battery out not much more happens than that

[Moab]

dv9000 series suffered from all kinds of motherboard failures, some can be repaired, some not...cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=2606740589‌​80

[ben950]

thanks but that didnt work it still reboots whole time

[ben950]

fans seems to spin ip ok and not much dust there at all but i just used compressed air to get rid of it

[Simon Sheehan]

Could you include how to clean it, or what to look for?

[Tog]

see additional info in my original answer