I decided to clean out my CPU fan as it was clogged, when I assembled everything again it won’t turn on 🙁

It’s an old desktop PC. There are no lights glowing on the motherboard at all, though there is none specifically labelled “power”. Just CPU, RAM, BOOT. None of these light up, not even a flash when it starts.

I have reseated the RAM, CPU, power cables. Removed the GPU to check.

The cord leading in to the PSU works but I don’t have a way to test the PSU itself or the out cables, but I have reseated them at each end.

This PC was working fine before. But with no lights on the motherboard I suspect either the mobo or PSU?

Mobo is asrock x570 PSU is silverstone 650w strider gold S series

Any help appreciated!

  • Dave@lemmy.nzOPEnglish
    2·
    15 hours ago

    That’s why I mentioned it! It seems logical. Normally 0 is off and 1 on, right? I tried in both positions but it buzzes when in the 0 position.

      • Dave@lemmy.nzOPEnglish
        1·
        14 hours ago

        For the record, I did a paperclip test and the PSU seems fine. 1 is definitely on, 0 off, and the buzzing is when it’s off 🤷. It’s not loud, you can only hear it when held up to your ear.

        • Webster@lemmy.worldEnglish
          4·
          11 hours ago

          Is there any chance the buzzing is actually from what you have the PSU plugged into? I think ive had a surge protector that have a buzzing without anything drawing power that went away once something was consuming power.

          • Dave@lemmy.nzOPEnglish
            1·
            4 hours ago

            Definitely the PSU, but it’s not drawing power so maybe the buzzing would go away if the PC was drawing power.

          • Dave@lemmy.nzOPEnglish
            2·
            4 hours ago

            Yeah, may just be that the PC isn’t drawing power, the buzzing might go if it was.