Computer shuts down every 30 or so minutes

lucasems

Reputable
Aug 27, 2018
9
1
4,515
My PC is shutting down completely every 30 or so minutes. It just suddently turns off, as if someone had pulled the power cable. I started to have this problem around a month ago and i thought it was the PSU, however after buying a replacement one the problem persisted. Strangely enough, after a few days of it shutting down it just started to behave normally again for no apparent reason, and it stayed that way for around a month. That is untill today, as the problem seems to be back in full force. It already shut down around 11 times today. I have made a log of 3 shutdown times :

19:58 - 20:26
20:26 - 20:58
20:58 - 21:28

As you can see, it seems to be consistently turning off every half an hour or so. Since it's not a PSU problem and my temperatures seem normal across the board, everything i know points at this being a motherboard issue, but i'm asking here just in case someone knows something else that could be causing this.

Here's my setup :

Operating System
Windows 10 Pro 64-bit
CPU
Intel Core i7 3770 @ 3.40GHz 50 °C
Ivy Bridge 22nm Technology
RAM
16,0GB Dual-Channel DDR3 @ 798MHz (10-10-10-30)
Motherboard
ASUSTeK COMPUTER INC. P8B75-M LE (LGA1155) 35 °C
Graphics
LG ULTRAWIDE (2560x1080@144Hz)
4095MB NVIDIA GeForce GTX 1080 (Gigabyte) 49 °C
Storage
1863GB Seagate ST2000DM001-1ER164 ATA Device (SATA ) 33 °C
111GB KINGSTON SUV300S37A120G ATA Device (SATA-2 (SSD)) 37 °C