Boot Fan question

wizard · 2024-08-19T15:02:00+0100

When my Win 11 PC boots up, the fans can be clearly heard. As soon as the Boot screen comes up, the fans go absolutely quiet. I am puzzled by this fan noise until the boot up. Is this common?

Glanza · 2024-08-19T16:20:40+0100

Yes, if you haven't set your fan profile up in bios then it'll either be running at full speed or at a faster rpm than you want for the noise, i've set mine in bios to run at 20% then once into Windows software takes over and runs my profile, the loudest fans in my PC are the ones on the gpu when they spin up.

wizard · 2024-08-19T18:28:59+0100

Glanza said:
Yes, if you haven't set your fan profile up in bios then it'll either be running at full speed or at a faster rpm than you want for the noise, i've set mine in bios to run at 20% then once into Windows software takes over and runs my profile, the loudest fans in my PC are the ones on the gpu when they spin up.

Thanks for this - I will check the Bios settings. What do you mean by Windows software takes over?

something daft already!! · 2024-08-19T18:33:13+0100

My GPU fan is very fast on a boot or reboot, but this soon calms down once into the boot screen.

wizard · 2024-08-19T19:06:40+0100

something daft already!! said:
My GPU fan is very fast on a boot or reboot, but this soon calms down once into the boot screen.

Same as me. Strange this happens now after I changed to a new GPU. Otherwise the PC is dead quiet. I guess I do not Game or load the GPU so do not have the sound issue after boot.

something daft already!! · 2024-08-19T19:57:16+0100

wizard said:
Same as me. Strange this happens now after I changed to a new GPU. Otherwise the PC is dead quiet. I guess I do not Game or load the GPU so do not have the sound issue after boot.

I suspect it to blow out the cobwebs or something. Not something that bother me too much as it does reduce quite quickly.

Glanza · 2024-08-20T10:48:47+0100

wizard said:
Thanks for this - I will check the Bios settings. What do you mean by Windows software takes over?

I use armoury crate or fan control to control my fan curves once the PC is booted up, before that kicks in the fans run at what the bios sets them too.