guess would be a bad video card. Replace with another to test.
Heres what happened.
I left my computer on while I went out to the doctor. Come back and I notice the computer has frozen. I look into the case (which I can open, but dust free for cooling) and notice that the fan on the video had just fallen off. Causing the video card to obviously overheat. (it was left on for over an hour, and i have no idea when in that time period the fan fell off) So I take the card out.
About a day later I wanted to see if the rest of the computer was ok, so i pluged the card in and started it up. First try the fans came on but no boot up at all...After a couple more trys the BIOS came up with a message saying BIOS ROM CHECKSUM Error.
So I went into BIOS to have a look and tried to set everything back to default, which was triky because the video card wasn't displaying everything.
restart and now ever since nothing.....fans just come out, and i hear the cd drives start up but no boot up at all....any suggestions or possible explainations?
Microsoft windows XP home SP2
AMD Athlon 2600+
1.25gig PC2100 ram
ATI Radeon 9800 Pro
Asus A7N8X mobo