The PC fails to start even though the CPU power cable is connected.
The PC fails to start even though the CPU power cable is connected.
Following the installation of a new PSU, the PC failed to power on. Through some troubleshooting, it became clear that connecting the CPU 8pin connector incorrectly would prevent startup. This issue isn’t related to the new PSU, as the previous one worked properly. I suspect a mistake during the PSU swap—possibly not connecting both ends of the 24-pin connector, only the longer one. Since the setup was modular and I wasn’t sure about the correct connections, it’s possible either the motherboard or CPU was affected. I’m uncertain which component is faulty and would appreciate advice on what to check next.
Did you perhaps reuse the same cables that came with the previous PSU? The 8-pin cables differ from PCIe and AT power-on MB cables.
No, I switched to the new cables. I did use the old power cable that goes into the wall.
Following up on this. I replaced the motherboard and it solved the issue. However, now my GPU won't power on. I swapped it out with an old one to test it and that one worked fine. So, I think I bricked my GPU as well.
Question:
To anyone's knowledge could doing what I did fry both the motherboard and the GPU? Luckily the CPU is fine.
To clarify, I believe the error I made was only connecting one of the ATX 20pin cables to the PSU. The motherboard end was fine, but the other end of the cable had two connectors, and I only connected the larger one. It was my first modular PSU so I wasn't sure how they should connect. Obviously, it didn't power up and I tried to turn it on multiple times. The PSU fan would spin for a second then stop with a clicking noise.
I believe this was my error that caused this, but I would like to make sure in the small chance that it is a faulty PSU and it will continue to bust any new parts I put into it.
Thanks for any help.