![An old ASUS motherboard here. The PC only turns on when the small 4-pin ATX12V ISN'T connected. The PC doesn't output anything from the GPU. Can't hear POST beep codes because this An old ASUS motherboard here. The PC only turns on when the small 4-pin ATX12V ISN'T connected. The PC doesn't output anything from the GPU. Can't hear POST beep codes because this](https://i.redd.it/vg9tupd2d0991.jpg)
An old ASUS motherboard here. The PC only turns on when the small 4-pin ATX12V ISN'T connected. The PC doesn't output anything from the GPU. Can't hear POST beep codes because this
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