Computer won't boot with out graphics card?

March 3, 2011 at 21:07:18
Specs: Windows 7
I recently got the component to build a new computer, but there's a major problem. The computer will not turn on without the graphics card, but I can't get a signal to my monitor. I don't think it's the motherboard. I thought it might have been, but I got a new one of a different brand and it's doing the same thing. The only way to to get the computer to turn on without the graphics card, is when the CPU power is unplugged (ATX 4 pin). It's not the ram, or wiring, or anything like that. I think it might be a problem with the CPU, but if that's the case... I don't understand why it boots with the graphics card installed(CPU fan, PSU, and GFX fan all power on and stay on indefinitely).

ASRock N68C-S UCC AM3/AM2+/AM2 NVIDIA GeForce 7025 / nForce 630a Micro ATX AMD Motherboard

2GB DDR2 800 ram

AMD Athlon II X2 250 3.0GHZ

ATI HD 5670 1GB

430 w power supply

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March 4, 2011 at 05:05:19
You provided decent info about everything but the power supply. Is it a decent name barnd unit - Antec, Corsair, ThermalTake, etc? Or a $15-20 cheapie?

The 4-pin ATX12V plug MUST be connected to the motherboard, that is what sends power to the CPU. Without it, the fans & other hardware may work (or appear to work), but there's no way the system will boot without it.

You should have benchtested your hardware. Obviously if it didn't work on the becnh, you would have saved yourself the hassle of assembling everything inside the case.

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