My friend recently brought his system unit for me to look at. After a normal shutdown, the pc would not power up the next day. I initially thought it was a power supply problem. I took out the psu from my pc and tried powering his system unit on… nothing happened. I made sure that all necessary hardware were connected properly – even reseated cpu and heatsink. Still nothing. I noticed that the light at the back of the power supply is on but goes off as soon as i hit the power switch. Anyway, I got tired and put my psu back in my system unit. Then all of a sudden I have the same problem!!! The led on my MB is on but nothing happens when i hit the power switch!!! I am so frustrated. I really hope someone can help me out here.
