Hey everyone, I just built a new PC a few days ago, and everything was working great until recently. After finishing a gaming session in a quiet room, I noticed a "thunk" sound that seems to be coming from the power supply unit (PSU). I checked the PSU fans but didn't see any issues, and I even tried using compressed air, but the noise persists. I'm using a brand new Montech Centaury 2, 850W Gold PSU. Here's a link to the sound I recorded: [link](https://imgur.com/a/mZAgrQE). Any advice would be appreciated!
2 Answers
It's possible that the sound is coming from the PSU's internal components rather than the fan. Sometimes, the capacitors or coils can cause noises under load. A quick check is to see if the PSU fan is spinning when you hear the sound; that could help isolate the issue.
Did you notice if the PSU fan was active when you recorded the noise? If it's not spinning at all, that could indicate a problem. Also, if the smart fan switch isn’t working and you're not getting any fan activity under load, that might be a sign that something isn't right with the PSU. Maybe it needs a replacement.

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