PSU Issue (Random Power Downs)

drukun · Nov 24, 2016

Hello all,

I've been doing some looking into my PSU lately and i think i may have found my issue, but cant really tell.

Lately while gaming (ONLY WHILE GAMING) my computer will randomly power down, attempt to reboot, and the graphics card will not boot with everything else. For a while i assumed it was my graphics card, but im not so sure now.

After swapping wires here and there with my card, it occasionally works again but inevitably it shuts down again. Then i have to troubleshoot until it decides it feels like working again.

I've been attempting to monitor my voltage, and it seems to have some drastic drops and rises. From .91v to 1.4v. It says its supposed to stay around 1.2v.

I have a Thermaltake 750W Gold 80 PSU, and have only had it about a year now.

Thoughts? Is my hunch possibly correct?

Thanks!

weberdarren97 · Nov 24, 2016

Anything under 11.4V is out of spec. Anything below 11V, and the computer won't be able to boot at all. These readings under 1.5V are coming from software? Never trust software voltage readings.

Thermaltake 750W Gold 80 PSU is not enough information. What's the exact model and how long have you been using it?

drukun · Nov 24, 2016

weberdarren97 :

I did get it from software, i was unaware, thank you. I used Overdrive.

My PSU model number is TP-750AHCCG-B. Ive had it about a year to a year and a half now.

It just happened against while typing this message. Everything powered down, then rebooted except the GPU.

weberdarren97 · Nov 24, 2016

It's not absolutely atrocious, but it's not that good either. I'm willing to bet that it's a big part of your issue, if it's not the whole issue.

Full PC specs please, so I know what you're trying to power and can suggest a relevant PSU.

drukun · Nov 24, 2016

weberdarren97 :

Raedon RX 480
Gigabyte board (Model 970A-D3P)
8GB Ram
AMD FX 8100

Thanks for the fast responses, really helps.

weberdarren97 · Nov 24, 2016

Seasonic S12ii 620w Bronze. Don't let the Bronze rating get you down, it's just an efficiency rating and does not reflect actual PSU quality.

drukun · Nov 26, 2016

weberdarren97 :

I got the PSU and replaced it today. But unfortunately, the issue still arises. I'm now convinced it may be the connection between my graphics card and motherboard. Ive reseated the card many times, but no good. Im going to try swapping motherboards and seeing if that fixes the issue. Thanks for your help!

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PSU Issue (Random Power Downs)

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