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.
See if there’s a cooling profile option in the BIOS. Maybe also run the Dell diagnostics. Might be something wrong with the fan tachometer.
Worst case, assuming the PWM is working properly, you could use a third-party application to control the fan speed.
There are no profiles, just an on/off switch. From what I’ve seen, there is also no way to control the fans from Windows (Linux somehow manages, though).
Dell power manager on my work laptop has profiles. But that’s a laptop… But still.
On my machine it has one screen: no battery found…