Only one cooling fan produces a loud grinding sound once you reach a certain speed.
Only one cooling fan produces a loud grinding sound once you reach a certain speed.
I double-checked the cleaning and confirmed no debris in the rotor or nearby wires. This issue seems to appear only at very high speeds—above 3000 RPM or more. I’m really puzzled about it.
Are you asking about a desktop or laptop cooling fan? It's quite typical. These fans tend to be inexpensive and can usually be swapped out.
That's typical, actually. I don't think it would matter unless you notice your RPM dropping, which would suggest it's failing. I've seen GPUs with fans that run quiet until 0-85% and then suddenly make a loud noise. It sounds annoying, but if the fans work normally otherwise, it might just be a sign of wear. If it really bothers you, replacing it would be the best option. Otherwise, keep an eye on it and wait until it stops working completely.
The RPMs will reach about 4000 when combined with the CPU fan, then gradually drop to 2000. Occasionally it completely stops before restarting slightly later.
Uh.. okay. Update, I had my laptop on silent mode for awhile as to not potentially damage the fans and the main chunk of noise is gone? It's kind of there and is vibrating a bit but for the most part it is gone? Maybe just a dying fan like 2PC21 said, I should just replace it.
It might also indicate a bearing problem. Various angles could result in different noises or cause it to stop completely until moved to another position.
To manage the fan speed and potentially resolve the issue, consider using the FanControl software. It offers comprehensive control over all fans in your setup based on various temperature sensors. You can adjust the curve for a particular fan header to prevent it from exceeding the problematic RPM range, which often causes rattling noise. This approach helped address the problem with my GPU fans skipping their operating range to avoid noise. https://github.com/Rem0o/FanControl.Releases