Cleaned my PC with compressed air, found out my PSU is a EvoLabs one (budget PC so not expecting a good brand) but know its not caused by dust.
Anyway, I notice that sometimes the PSU (think its coming from there) goes abit louder and othertimes doesnt. Same load on the PC at the time, not doing anything so nothing to trigger it. Can be louder or quiet when idle so not stressing the PC. Its not massively louder. When quiet i cant hear the PC over the TV, when it goes louder i can hear it in the background
I assume its the PSU fan anyway. Only got 3 in the PC, CPU fan i can monitor and doesnt change RPM, the case fan is at the front and the noise is coming from the back. No other moving parts in the PC so has to be the PSU
What could be the cause of that the intermittent louder fan?