I have a Inspirion 8600

 

Recently windows would not startup because of a corrupted file. So I tried to fix but no luck. So I installed Windows XP onto a different drive. While the files were coping I left and when I came back the computer off. Since then when i press the power button nothing happens. No beep, no POST, no BIOS, nothing. I've disconnected the power cord and everything from the system. Checked the the power supply and its fine. I've done all of that but luck. My computer will start or do anything at all.

PLZ SOMEONE HELP

IF u have any help or suggestions plz help