Question Random monitor, keyboard and mouse shutdown while PC still on ?

Nov 27, 2021
Im having this issue for like 6 months, it used to happen once a month but now its happening three times every week. All my periphericals shut down at a ramdom time, while im scrolling on youtube, twitter, working on a word document. It never happens when Im playing a videogame so I dont think is a heat issue.
My specs are
GPU: Nvidia RTX 3060TI
CPU: Ryzen 3600
MB: Aorus elite B450 v2
PSU: Coolermaster MWE 650W bronze
RAM: Crucial Ballistix 2x8GB 3200MHZ

I already updated the drivers, even reinstalled windows 10 and format the whole computer. I did all test I can such as memtest and it never shows me an error. Even a technician saw the computer and told me he found no issue with the hardware (he told me this was probably a software issue and formatted the whole computer, reistalling windows 10) but the problem still happens, and i dont know what to do now.
sorry for my engrish