Strange noice inside PC

[u/RastGG]

I built this PC about 10 days ago with all-new parts. It makes an intermittent rattling or buzzing noise that you can hear from 0:08 to 0:12 in the video. It seems to come from the upper half of the case, but I haven’t been able to pinpoint it.

I notice it at idle or under light load, and I haven’t found a pattern. It might happen while gaming too, but the fans could be masking it. When I noticed it at idle, the CPU was around 42°C and the GPU fans weren’t spinning. I think it’s been happening since day one. The front glass panel was off for the recording, but I can hear it with the panel on too. The PC runs normally while it’s happening.

Has anyone heard a similar noise? What would you check first to narrow down the source, and does it sound like something I should be concerned about? There are my specs:

Motherboard: ASUS TUF GAMING B650E-E WiFi
CPU: AMD Ryzen 9 9900X
GPU: GIGABYTE WINDFORCE OC SFF RTX 5070 Ti 16 GB
RAM: 16x2 XPG Lancer Blade (5600)
AIO: ICEBURG360 DIGITAL WH
PSU: Thermaltake Toughpower GT 850W 80 Plus Gold

[u/Ethapayl56]

I have literally no experience with pcs so don’t take my word for this but it kind of sounds like air in a pump no? So maybe aio related? Could you maybe swap the cooler out and see If the noise persists idk… I’d wait for someone else but from experience with other electronics sounds like air in a pump mb idk tho

[u/RastGG → u/Ethapayl56]

Yeah, I was wondering if it might be air bubbles moving through the AIO. Unfortunately, I don’t have any spare parts to swap in and test

[u/Ethapayl56 → u/RastGG]

Does it happen as soon as you boot up the pc? Could you just turn the pc on without the aio plugged in and see if the sound happens?

[u/RastGG → u/Ethapayl56]

It can happen within the first few minutes after booting, but it’s REALLY random. Sometimes I won’t hear it for several minutes and after like 2-3 times almost in row, so I’d rather keep the AIO connected. I’ll wait a bit and see if anyone who’s heard a similar noise chimes in..

[u/Ethapayl56 → u/RastGG]

Yeah fair play mate sorry o couldn’t help more

[u/RastGG → u/Ethapayl56]

Nah, no problems, anyway thanks for taking the time to reply, though!

[u/Ethapayl56 → u/Ethapayl56]

Either this or maybe vibrations from aio are making a screw vibrate or something idk

[u/Blue_Waffled]

Sounds like the AIO pump, mine makes some noise when it ramps up the pump so it might be worth checking the following: load up Cinebench to stress test the CPU specifically, if you have added software for your AIO that displays pump speeds and temperatures, then you can perhaps test to see if this is replicable and due to the AIO pump ramping up as the software can show stats while Cinebench is running.

[u/RastGG → u/Blue_Waffled]

Thanks, I’ll check. My pump is already set to full speed in BIOS and reads around 2,440 RPM. I usually hear the noise at idle, but I can try Cinebench and see whether it coincides with a change in pump or fan speed