Question PC restarts randomly and won't always turn on ?

[Yankler7]

Hi,

Issue:
For a while my PC has occasionally restarted on its own - seems to be fairly random. The restarts don't seem to be related to heavy load - at least during gaming it has only happened once or twice, whereas just being on Discord or using chrome for normal browsing has caused a lot more restarts.

There's no BSOD or anything - just a reboot.

Recently, I sometimes cannot even turn on my PC - even if I drain all static residual power etc. etc.

What I tried:

• Removing the MB battery and BIOS reset
• removing all dust from all components
• swapping RAM slots, trying only 1 stick in different slots
• swapping power cables

Question:
My guess is that my PSU is faulty, but before I run out and buy a new one I'd like to know if any of you suspect something else to the culprit?

Specs:
PSU: Corsair RM850x
CPU: 10700k
MB: Asus z370
16gb DDR4 G.Skill 3000mhz..

Thanks in advance!

 

[helpstar]

update the BIOS

the RM850x should be still under warranty, RMA it

check temperatures