I was cleaning up a maite's PC and the performance was increased significantly. Then all of a sudden while installing norton anti virus on his machine it said that i had a corrupted cab file...I went on without it and it was rolling back the system then it turned off in the middle of it and the installation wasnt finished. It didnt even shut down, it just turned off. Now I wont turn back on. The processor fan spins but I get no Bios information or anything it wont turn on. I swapped the power supplies but to no avail. same thing kept happening. Also I will note that I noticed that the keyboard light for hybernate is on but when I press the num lock key or all caps key it doesnt light up the corresponding lights. ANY SUGGESTIONS?