I'm building my first PC and ran into a major issue when I tried to power it up. Nothing happened—no lights, no sounds, absolute silence. I've been troubleshooting, focusing on the power supply unit (PSU), which is a Montech Century II 850W. I tested with just one stick of RAM, took out the GPU, and played around with the CPU fan and its RGB connector. I even tested different outlets and flipped the smart zero fan switch, but still, nothing worked.
After running a paperclip test, I heard some clicks from the PSU, but the fans didn't start. Initially, I thought the PSU was defective, so I contacted support and received a replacement. However, after waiting two weeks and installing the new PSU, I faced the same issue—no lights, no sound during the paperclip test.
Is it possible to get two faulty PSUs in a row? I'm wondering if it might be an issue with my motherboard, the power from my home, or something I might be overlooking. Any advice or tips would be greatly appreciated before I decide to visit a repair shop or invest in a different PSU altogether. Here's my part list for reference: https://pcpartpicker.com/list/sQZFWc
3 Answers
The paperclip test should work with just the PSU, no extras attached. If you're still getting nothing from the PSU, you might try testing it at a friend's place to rule out any issues with your home's electricity. It's weird to have two PSUs fail, so there might be other issues at play.
Slim chance that both PSUs are bad, so something’s likely off elsewhere. If your motherboard is outside the case, ensure that all cables are connected properly. It would help to see a list of how everything is wired up. Are you powering on the PC from the PSU switch?
It’s pretty rare to have two defective PSUs, so check your connections again. Make sure all the power cables are securely plugged into the motherboard; sometimes people forget the extra power connectors. Also, double-check that the PSU switch at the back is turned on! If everything appears fine, a faulty outlet or electricity issues in your house could also be the culprit.
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