Computer randomly shuts down (power loss) and turns back on

Bart748

Reputable
Nov 21, 2015
2
0
4,510
alright my PC randomly shuts down,
i checked the cables and everything is connected
i checked the temperatures and everything is a nice 32 degrees (Celsius) when idle
i checked the health of my SSDs and HDDs and they are all 100%
i checked dust and fan circulation, Dust minimal, fans all spinning

my PC started doing this after i swapped it from a extension box to the wall
somehow that made it shutdown and restart.
i moved everything back how it used to be and it still loses power.
im using a Corsair RM850 80+ gold PSU
The error message i get when it boots indicates there was a power loss.
i have no idea how to fix this

my PC specs are:
i7-4790K
GTX 970 SLi
Corsair RM850 PSU
ASUS Ranger Mobo
Corsair H100i watercooler
Corsair vengeance RAM (8GB)

Its been working for 6 months in the same configuration
however my mobo once randomly changed my boot drive.
maybe my mobo is broken??