PC randomly shuts off

NAVY 108 · November 23, 2021

Hi guys I have a pc that will randomly turnm off, and sometimes refuses to turn on.by shutting off instantly. I have already bought a brand new power supply, but that doesn't seem to change anything. I have an unusual mobo that requires a motherboard adapter for the connector, do you guys think that may be the problem? One time a wire came out, and I did not know where it should go. but the pc was still functional. Do you guys know any suggestions?

jaslion · November 23, 2021

Full pc specs psu in detail.

NAVY 108 · November 24, 2021

14 hours ago, jaslion said:

Full pc specs psu in detail.

Sure,
Xeon e3 1220 v3 (i5-3470 equivalent)

hp elitedesk 800g1 mb w. stock cooler

DIYPC DIY-S08W mid tower

700w evga br psu

256gb ssd

2tb hdd

8gb ddr3 1600

gtx 770 2gb

I use an adapter from a standard 24pin mb connector to a 6x2 pin connector for mb, I think that may be the issue but I'm not sure. I don't think it is the other since the pc works fine mostly, just it will randomly shut off, or take many attempts to turn on. It's not the psu, I just got a new one too. Any ideas?