I tried using a different power supply cable and took the battery out of the motherboard and placed it back in, but it made no difference. I don't have another power supply powerful enough for this PC, but I tried this power supply in an older PC and there was no sound or anything out of that PC. The older PC's power supply seems to work in the older PC. I can't fully test it because that PC doesn't have a CPU anymore, but the older power supply did light up and cause the computer to make a buzzing sound, while my current power supply didn't make the old PC do anything.
My PC specs:
Windows 7 Ultimate 64
Intel Core 2 Quad 9550 @2.83Ghz
4GB DDR2 RAM
Radeon HD4870 512MB
Asus P5Q Pro Motherboard
Seagate 7200 RPM 640GB HD
OCZ Stealth 650 Watt Power Supply
I've now returned my power supply to my PC, but it's still not turning on at all. What could have happened ?
Edited by darien, 20 November 2011 - 01:16 AM.