If you get no response when you push the power on button - no lights - no fans - no bios starting, it would seem to be a hardware or electric supply problem, not software.
Make sure the on-off switch on the back of the computer has not been turned off (if it has one), the power cord is both plugged into the electric recepticle and firmly into the computer, and that there is electricity coming from the electric outlet.
If you use a power strip or surge protector make sure the power is on.
I know these steps are basic, but you would be amazed how many times they are the problem.
Edited by Enthusiast, 19 August 2006 - 01:08 AM.