Random Power-off during BIOS/boot

badinplaid19

Commendable
Jul 21, 2016
5
0
1,510
Hey all,
I work at a university and build rigs for graduate students in my department. One particular machine is behaving very strangely. It gives a single beep (system OK) and posts just fine. When I enter the BIOS, all voltages and temperatures appear stable, and all the RAM and both hard drives are recognized. Sometimes, shortly after checking all of this, the machine powers down. Other times, I'm able to boot up Windows 7 and get to the desktop before the machine decides to shut down. I swapped out the power supply with another, identical unit from a working PC and had the same issues. I also put a new, identical motherboard in, to no avail. Any thoughts? (specs below).

MOBO: Gigabyte GA-970A-UD3P R2
CPU: AMD FX-9590
PSU: Corsair CX600
Video Card: EVGA GeForce GT 610
RAM: 32GB G.Skill RipjawsX

Let me know if you need more info, I'm still new at this. Also, just for argument's sake, this machine functioned fine for over a year, and there is an identical machine in the same office that continues to function without any problems.

Thanks!
 

badinplaid19

Commendable
Jul 21, 2016
5
0
1,510
A new development: on the last entry into the BIOS, it appears as though the CPU had heated up to 80C. Perhaps a bad pump on the water cooler? (Cooler Master Seidon 120XL).
 

badinplaid19

Commendable
Jul 21, 2016
5
0
1,510


Again,
"...this machine functioned fine for over a year, and there is an identical machine in the same office that continues to function without any problems."
 

badinplaid19

Commendable
Jul 21, 2016
5
0
1,510
Well that's irritating. For any home builds I do, I've always ordered through Newegg, but last year, the university switched to using SHI as their dedicated supplier for parts. I asked the salesperson there if I could get Asus M5A99FX PRO/R2.0 for these two boxes, and she said they didn't stock them, but that they had a compatible Gigabyte MOBO. Guess that'll teach me to trust the "experts" :(