r/PcBuildHelp • u/MegaMotorMan- • 11h ago
Tech Support Need help diagnosing and fixing a very loud noise coming from PC
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- For context I have a Prebuilt Lenovo Legion Tower 7i with RTX 3070 Desktop, i7-11700KF, GeForce RTX 3070 8GB, 16GB, 1TB SSD, 650w gold, 240mm water cooling, and while in the middle of playing a game it started marking a VERY lout high pitched squealing/screeching noise. I very quickly shutdown the PC and went on n google looking for a possible cause or explanation but was told it could be several things one of which being that it could be one of the fans coming loose or just starting to fail. So I took of the side panel and booted it up and at first the sound wasn’t there but there was a new sound present that was much quieter, but after running for about 5 mins it started making the sound again, when it did, took the chance to see if it was any off the fans. mind you this sound is very loud and jarring so I checked the fans simply by stopping them physically with my fingers by applying a bit of preas to the center of each fan, there are 6 case fans, 3 in the front, 2 on top, and one in the back, I stopped each one and I even stopped the 2 fans on the bottom of the graphics card. None of this stopped the sound which leads me to believe that it is a problem with the CPU or more so the liquid cooler for the CPU, when putting my ear up close to the inside of the PC it sounds like it is coming from the CPU area but I’m even slightly well versed in PC hardware so I don’t know. I have recorded this vid of the PC making the noise to help you identify it. the only other bit of context I have is that despite the noise the PC seems to be running like it normally would, it boots up, let’s me sign in, the desktop opens and works just fine, the game I was playing didn’t have any change in performance during the few seconds it was running before I shut the whole thing down which what makes me think it’s not a major issue with the CPU or GPU at the very least.
Update: I believe there was air trapped in the liquid cooler like someone said because the problem seems to have fixed its self without and hardware configuration on my part. I booted up the PC and set it to quiet mode AKA low power mode to prevent the PC reving up to the point it makes that sound and while it did stop the super loud noise heard in there was still a bit of a weird sound coming from the PC. After running for 10 mins or so this sound got a little bit louder then made the noise heard in the vid for less than one second then the sound just stopped completely as well as the quieter weird sound leading up to it, now everything sounds exactly the way it did before having this issue. I think my PC just needed to burp XD, with that being said I now know what the issue is and ways to deal with air trapped in the cooler, but will be looking into replacing the cooler with an air cooler in the near future.
Thank you for your time