Gigabyte GA-P35-DQ6 motherboard
Corsair CM2X1024-8500CSD memory (2 1GB sticks)
Core2Duo E6850 Conroe 3.0GHz processor
Tagan ITZ 1100W Power Supply
I put this together with a EVGA GeForce 7200GS video card - nothing else. Put it on a bench without case or other peripherals.
When I turn it on, the power supply cycles on and off - the fan on the CPU heat sink will spin for a second, then shut off. This cycle repeats itself until I turn off the power supply - no beeps, nothing on the monitor. The cycle is only a few seconds - the power supply fan goes on and off like the CPU fan.
My instincts were a bad power supply - so I go a Silverstore 1000W power supply and hooked it up - same results.
So, it must be the CPU or the motherboard? I checked the CPU and it seems to be seeded fine.
Anyone else ever had this problem? Any suggestions?