I have a Gigabyte GA-MA790X-UD4P paired with a Phenom 9850+ and Corsair gaming ram. All of a sudden when I hit the power button it only turns on for a second then turns back off. When I took out the GeForce GTX260 and replaced it with a GeForce 7600 it would stay up for a couple more seconds. I have used a Antec power supply tester that displays voltage and it showed all of the motherboard connectors were good for volts but it is only a 650 watt power supply. The GTX260 says it needs a 525 watt power supply and I know the CPU is a 125 watt chip. Could it be that the heavy load I had it under all of the time has caused it to no longer supply enough watts?
PS. As note before this problem it would shut off a few times after it finished logging into windows.
PS. As note before this problem it would shut off a few times after it finished logging into windows.