Random shut down and reboot ¿Faulty PSU or Motherboard?

dietersanchez

Reputable
Jan 20, 2015
2
0
4,510
Hi there. I've just joined the community after doing some research and googlin'

My system goes like this
- Fatal1ty z77 Pro
- Intel i5 2500k 3.3Ghz
- 2x4GB Corsair Vengeance 1866Mhz
- Seagate 500GB
- Cooler Master GX650w 80 bronze
- Asus GTX750 1GB

A couple months ago, BEFORE I had the video card, the PC shut down completely and then rebooted itself. It shut down again, then rebooted again and went on normally. Now, it's been a few weeks since I've installed the video card and everything went normal. I've played games like COD, GTA VI, etc, edit photos and videos and everything is normal. However, during the last couple of days, the PC has been shutting down out of nowhere, at the point of becoming unsafe to use.

Now, I've isolated RAM slots, HDD, Video Card, even left the motherboard with 1 ram slot in the bios... and watched temperature. Everything seems fine, but sometime it would shut down again and restart.

It'll be dificult for me to find a PSU to test but I was wondering if there was a way to determine which one should I replace, PSU or Mo-Bo? I haven't experienced any kind of instability like RAM problems or HDD problems, so it's narrowing down but I don't want to buy a higher PSU for nothing.

Problem was there long before I got the new video card. Furthermore, the video card does not withdraw that much voltage and the system is shutting down and rebooting constantly even WITHOUT the video card and any other stuff like optic drive, HDD and even RAM.

Thanks in advance for any help regarding this matter.
Greetings from Peru
 

dietersanchez

Reputable
Jan 20, 2015
2
0
4,510
Thanks for the reply.
Took the CPU to a technician so he could do some testing and at first he tried to feed me with BS such as incompatible RAM (lol) , HDD failure (lol), and such until he realized I know my way around this matters. He kept testing until he swapped PSUs and magically, it stopped shutting down and rebooting.

Got a new PSU already, not a very expensive one, but wil do for now.