need help computer won't turn on

You may be in suspend mode. Try holding the power button for a few seconds and see what happens. If that doesn't work, unplug the computer for a few seconds and plug back in and try to start. If the flashing light persists (amber?), there may be a power supply problem and the system is unable to start.

I'm having the same problem. I've changed the psu twice which fixes the problem for a day or two. I've reseated every card on the systems and the only thing that works is replacing the power supply. The system will turn on (green light) but the problem returns a few days later. Change the power supply again and the system works. I've gone back and fourth numerous times with the same power supplies and every time, the system will boot and work for hours. It seams like an overheating problem but no way to confirm. I’m running the desktop today with the case open to see if it helps.

I'm having the same problem. I've changed the psu twice which fixes the problem for a day or two. I've reseated every card on the systems and the only thing that works is replacing the power supply. The system will turn on (green light) but the problem returns a few days later. Change the power supply again and the system works. I've gone back and fourth numerous times with the same power supplies and every time, the system will boot and work for hours. It seams like an overheating problem but no way to confirm. I’m running the desktop today with the case open to see if it helps.