I have a Dell Optiplex 3060 here, that I used as a backup desktop with Linux, but now I’m trying to use it essentially as a streaming host for games (Fallout, GTA…), unfortunately that means Windows.
And even less fortunate: Windows seems to think, fan speeds only know one direction: up.
Essentially, the machine starts nice and reasonably quite, but after some load (e.g. a game), the fans never spin down again. Even if the temps are fine (all cores at <30°C, GPU at 48°C), it keeps running in turbine mode.
The only “fix” is a sleep or power cycle.
Since this machine is supposed to run relatively long hours and sit in my room, this is quite annoying and I’m kind of out of ideas.
Newest BIOS and all the Dell Magic™ are installed.
It might be a failing fan. I have an Intel nuc whose fan started sounding like an air raid siren, so I took the fan out, drilled a hole into its bearing and added coconut oil into it. It is working fine till this date, but buying a new fan is probably better.