Windows 7: Need help. PC cant turn on.

Hi,

I having difficulty to turn on my PC after it having sudden power off. It turned off immediately during I was playing game.
When i tried to turn the PC on again, this just spin up for 1 second then it just stopped.



Current PC spec.
- Intel C2D E8400 3Ghz
- 4 Gb ram
- Asus GTX 250GS
- Asus P5QL-Pro mainboard
- CoolerMaster Exreme 500W

FYI, this system had used for 2 years and the graphic card just changed for warranty from previous 9800GTX+. And I had used this 250GS for around 1 month then encounter this issue.

Then I tried to swap my graphic card to a lower end GeForce 7300GS and the PC can be turn on and boot into OS, and then swap back with the 250GS wont spin up any thing also.

I would like to ask is it the PSU or the graphic card, or the mainboard had problem?

Thanks...

That sounds like a fried graphic card to me... However we would need to see your system specs to rule out a PSU problem....