Possible PSU Problem?

billyboo · Apr 22, 2014

Hi there,

Just before I go away and start wasting a ton of money to possibly fix a small problem, I just want another pair of eyes looking at this.

Basically custom built gaming rig (by me) back in October 2013. I've just recently moved to a new house on 4th April but I've had my computer running fine for a week or two while I was here. Then suddenly I loaded up CryEngine 3 for my university project and BOOM, it just went off and then came back on again.

It turns off randomly when I'm playing Diablo 3 or LoL, pretty much anything using graphics. I first checked the temperature readings of CPU and graphics card and they seem to be pretty cool. Nothing is overclocked.

I did however turn off automatic restart if unexpected shutdown occurs and the weird thing was when it did shutdown unexpectedly, I tried booting it up again and it wouldn't switch on for ages until on it's own strangely.

These are my HWMonitor readings after playing a game of LoL:

My Computer Spec:

i5-4670k 3.4GHz CPU
Cooler Master Hyper 212 EVO
GS800 Corsair PSU
MSI Z87-G45 Motherboard
Samsung 840 250GB SSD
Western Digital 500GB HDD
R9 280x MSI Graphics Card
Corsair 8GB (2X4GB) DDR3 RAM
Windows 7 64Bit Professional

It does lead me to believe it could be a faulty PSU after 6 months?

Appreciate any help in advance, Thanks.

laviniuc · Apr 22, 2014

those readings are perfectly fine, but yes, what you're describing sounds like a psu issue...

lowriderflow · Apr 22, 2014

definitely sounds like a PSU issue... might just be random bad luck.
that's definitely a good psu, and more than capable for that system.

Try testing with another PSU... i know most people dont have spare parts laying around, so you might have to do the old 'rental' system, where you order one online from whatever retailer is near you then return it to the store a few days later

billyboo · Apr 22, 2014

Yeah, I did have second thoughts whether it would be a MoBo problem or CPU problem but it definitely seems a PSU one.

What I shall do is order another PSU today (750w) and test that for a week. If there aren't any problems then I'll return the faulty one.

I'll post updates on this, thanks for the advice for the moment.

billyboo · Apr 23, 2014

Just an update on this issue.

I'm managing to get a hold off a friend's PSU but not installed it yet. My computer went off again tonight and as I've said before I've turned off automatic restart when unexpected shutdown.

I couldn't physical turn on the machine until 1 minute after it shutdown where it just came on, on it's own. Still sounding like a PSU problem?

billyboo · Apr 25, 2014

This issue has now escalated.

Just receive the BSOD:

Any ideas, possible GPU problem?

psycoblaster · Apr 25, 2014

Mine was a GPU problem. 280X = 7970.. and my 7970 was the culprit. It MAY be a PSU problem; that's what a lot of people told me when the same thing happened. But I realized it was a GPU problem. Funny thing, it runs fine during furmark and other GPU benchmarks. It only happens when playing games, including LoL

billyboo · Apr 26, 2014

psycoblaster :

Mine seems the same when i play games but i had this BSOD when i wasn't even on the computer. What i'm going to do is first update all the drivers including BIOS. Then if that doesn't work, I have an old gtx 460 kicking about which I can drop in. If it's still not right, I'm not sure what else it could be.

Thanks all for the input, much appreciated.

billyboo · Jul 20, 2014

Turns out this was the PSU was the main culprit. Sent it back and got a different model.

Thanks all for input.

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