When the computer just turns on press either F1 or F2 or Del, that will take you to bios, then there will be a button standard bios settings.
After that there will be a list of about 10-20 buttons one of them will say load default Bios settings. Press enter when your over it, It will say Y/N press enter, press Y and then press Enter. Then after that press ESC it will say leave bios without saveing? press N then Enter, Then press on of the buttons that say Exit and Save, Press that, then a window will pop up and say:
Do you really wish to exit bios with saveing, press Y then press enter, then computer sould restart, after that it should work...
Casual (AMD 4000+ x4) (Stock mobo) (750 Gig + 8 TB Xternal) (150 RAPTOR) (9800GT OC x2)
(OCZ PowerStream 800 Watt) (2G OCZ) (XP/Vista)
Torrenter (1.05GHZ) (Stock mobo) (250GiG) (9200 Radion) (Stock PSU) (768MB) (XP)
Laptop (Intel Core 2 Duo @ 2.8Ghz) (2G) (8600GT) (XP/Vista) (500GiG)