![How To - "No POST", "system won't boot", and "no video output" troubleshooting checklist | Tom's Hardware Forum How To - "No POST", "system won't boot", and "no video output" troubleshooting checklist | Tom's Hardware Forum](https://i.postimg.cc/ZRM1Rsz4/4-Pin-CPU-connector.png)
How To - "No POST", "system won't boot", and "no video output" troubleshooting checklist | Tom's Hardware Forum
![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://preview.redd.it/vg9tupd2d0991.jpg?width=3264&format=pjpg&auto=webp&s=a0237e8d50b04bb83848cdddbda35b84a32146b2)
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
![How To - "No POST", "system won't boot", and "no video output" troubleshooting checklist | Tom's Hardware Forum How To - "No POST", "system won't boot", and "no video output" troubleshooting checklist | Tom's Hardware Forum](https://i.postimg.cc/DyYN49Kt/8-Pin-CPU-power-connector.png)
How To - "No POST", "system won't boot", and "no video output" troubleshooting checklist | Tom's Hardware Forum
![Pc won't post - do I need both the 8 pin and 4 pin plugged in for the CPU? Power supply didn't come with a cord like that. : r/pcmasterrace Pc won't post - do I need both the 8 pin and 4 pin plugged in for the CPU? Power supply didn't come with a cord like that. : r/pcmasterrace](https://preview.redd.it/pc-wont-post-do-i-need-both-the-8-pin-and-4-pin-plugged-in-v0-zgaqfijiy39a1.jpg?auto=webp&s=388f1c931a27dc1e8d383c80f49c81c3545dc4be)