hi, the power supply is a Mars Gaming mpb750, but I don't think it's the problem, since the problems appear only on the windows desktop, with the graphics card at minimum, it doesn't even turn on the fans, and playing with the GPU and CPU at almost 100 % charge, there is no problem.
SO win10 pro and win11 pro
GPU: Sapphire Pulse RX 6600
CPU E5-2640 v3
Motherboard: i'v tried two diferent: atermiter x99 and huananzhi x99 qd4
RAM: Atermiter DDR4 3200 16Gb * 2
SSD: Lexar SSD NM620 2TB (I'v tried with kringston 1Tb mvne)