Not to tread, but read the tips section above where you post. This very vague please provide more information so that other members can help you isolate your issue.
As a start
Bad power supply
If M/S has stated you have a graphics driver problem.
Start your system in safe mode.
Go to Control Panel -> Open System
Open Hardware Tab -> Click on Device Manager button
Expand Display Adapters
Un-install all Adapters listed and re-boot.
Others will follow to clarify and
with other proceedures to try.
I've never posted here, but will try this. I have Windows XP Home edition. Microsoft tells me I'm out of support incidents. When I turn on my computer it normally takes a good 10 minutes to load because right after the first Windows screen. It reboots 3-5 times. It's somewhere between a graphics driver failure and a driver failure. Is there a good way of finding out exactly what is doing this? w/o reinstalling Windows XP. When I finally get into XP, the last time I ended up filling out 12 serious error reports in a row.