I don't know if anyone can help. I built a computer a few months ago and it was working perfectly until about 3 weeks ago when it would not start properly. When I pressed the power button the fans would spin and the DVD drive would start but the hard drives and the GPU would not start. In order to get the computer to power on I have to turn the surge protector socket switch off and on quickly and then the hard drives spin and the GPU provides a display on the monitor. Once on the computer works a treat.
I suspect the PSU might be at fault but it is brand new (Be Quiet 550 Dark Power) and came highly recommended.
Asus P5QL-E Motherboard P43 chipset Q6600 CPU Dark Power 550 Power Supply ATI Radeon Sapphire 3600 Antec 300 Case Samsung Spinpoint 500 Hard Drive Samsung Spinpoint 250 Hard Drive Samsung 2032BW Monitor Pioneer DR16 DVD drive 4GB Corsair DDR2 Ram (PC2-6400 XMS2)
I agree with Technotiger, but try something else just to check. Disconnect from your surge protector and plug in at another point then try switching on again. If that cures it then it's the surge protector board, if not then I'd have a closer look at the PSU. All the best.