PC shuts off randomly then boots on and off repeatedly until shut of for a while.

chrispeterson

Reputable
Jan 13, 2016
4
0
4,510
It used to happen less often but now it's everyday sporadically.

Once it shuts off it will click on, the fans and lights all spin and come on, then almost immediately shuts back off and will keep doing this until the PSU is unplugged or the power button is held down for a few seconds.

If I leave the computer off for 15-20 minutes it boots back up right away.
Occasionally on the first boot back up, it will shut off mid boot once, then be fine until it eventually fully shuts off and goes into that cycle again.

Ruled out that it was my GPU by booting up without the GPU and using integrated graphics and it still ended up shutting off.

CPU temp floats around 55-72 degrees Celsius so I don't think it's overheating. Also no errors during post when I eventually get it back on. All other temps are fine too.

I'm thinking it might be the PSU but I haven't tried testing another yet.

System specs
Intel Core i5 4460 3.2ghz CPU
Asus ROG Maximus Hero VII Mobo
HyperX Fury 2x4GB DDR3 RAM
Gigabyte G1 Gaming GTX 970 GPU
Corsair AX760i PSU
PNY 120GB SSD
WD 1TB HDD
 

chrispeterson

Reputable
Jan 13, 2016
4
0
4,510


Have it running with the power and reset switch unplugged. I"ll post an update if it happens again. If so I may pull out my GPU and put in my old 300w PSU to test it out.
 

chrispeterson

Reputable
Jan 13, 2016
4
0
4,510
Got it to turn on by actually just hitting the PSU while it was cycling on and off. Then got a message during post saying that surges were detected and that asus anti-surge was protecting it.