Who today had the same problem that the computer, HardReset. After that Windows Update and reboot. Then after 15min again. Hard reset every 15min.
2 People now i know, has same Problem.
Windows Event shows, Powerloss (Kernel).

I had 2 Hardresets, my Friend in Steam had 1 Hardreset and my Brother has 3 now.
Greetings St1cky