Computer has started to randomly shut down...again.

Jobias111

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Jul 10, 2015
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So a week or so ago I had a problem with my computer shutting off randomly. I had bought a new Harddrive, PSU, and GPU, put em in, and this is where it all started. Originally, the computer wouldn't shut down AT ALL. It would lose its connection to the monitor, but the computer wouldn't turn off. I fiddled around with the inside of my computer, and that fixed the issue. THEN the complete opposite problem happened. It would shut down, then come on for 2 seconds, shut down, come on for 2 seconds, then shut down for good. The power button wouldn't work at all. The computer would then turn back on after flipping the I/O switch off and on again. Then it would do the same thing a few minutes later.

I eventually solved the issue by unplugging every cord of my PSU, and plugging it back in.

My computer has been complete fine for about a week, but just now I was playing a PC game, and it randomly shut off AGAIN. The exact same problem as before, would turn off and on over and over until I flipped the I/O power switch on my PSU, but only was on for about 5 or so minutes. I just unplugged and replugged anything AGAIN, and now it seems to be Ok for the time being.

The only difference is that I was playing a PC game this time, which may have triggered it? What could this possibly be? Could this really still be a faulty PSU even though it worked for a week, and went out from me playing a game? Or is it something else? My rig is :


GPU- Geforce GTX 970 Gaming 4 G
CPU- Intel Core i5-2500
8 GB Ram
PSU EVGA Powersupply 750 G2
Motherboard- GIGABYTE GA-Z68X-UD3-B3
Fan- >ARCTIC COOLING Freezer 7 Pro Rev.2 92mm CPU Fan/Heatsink
Harddrive
WD Blue 1TB Desktop 3.5 Inch SATA 6Gb/s 7200rpm Internal Hard Drive
 

Jobias111

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Jul 10, 2015
9
0
4,510



GPU- Geforce GTX 970 Gaming 4 G
CPU- Intel Core i5-2500k
8 GB Ram
PSU EVGA Powersupply 750 G2
Motherboard- GIGABYTE GA-Z68X-UD3-B3
Fan- >ARCTIC COOLING Freezer 7 Pro Rev.2 92mm CPU Fan/Heatsink
Harddrive
WD Blue 1TB Desktop 3.5 Inch SATA 6Gb/s 7200rpm Internal Hard Drive
 
Go into your BIOS, and on the Save/Exit page, there should be a Restore to Default Values or something similar. click on that, and then Save and Exit, and the computer will restart.

Download HWinfo and monitor the temperatures of your system. If none of your temps go over 75c when playing a game, then its most likely not a temperature problem. Idle temps should be in the 30c to 40c range as well.

The PSU that you have is normally a very good power supply. But no company that makes electronics has 100% good units.

I am a bit baffled by the fact that unplugging all the power supply cables seemed to have resolved the problem, but now the problem has returned. That might indicate to me that the cables are not fully inserted into the motherboard sockets. On the other hand, the fact that it would not shut off at some points, and then will not power up at times does not help matters.
 

Jobias111

Reputable
Jul 10, 2015
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0
4,510
I don't have another computer to test the PSU in I am afraid. I don't think it is an overheating issue. It MIGHT HAVE been this time, but 1 week ago it definitely wasn't, because I was keeping tabs on the temperature. I just didn't have anything open while I was playing my game, because I had assumed the problem was fixed.

Yeah I don't understand this whole plugs making it work thing AT ALL. It is not like my computer moves around whatsoever, so I don't understand why it works for a week but then all of a sudden the wires would be unplugged. I just don't get it. It only wouldn't shut off the VERY first time I had put the stuff in, and this problem only lasted for about 10 or so minutes, before it war quickly fixed. This shuttdown problem is definitely the biggest issue.

I will try resetting the BIOS though and seeing if that does anything. It is really hard to figure out if it is working or not because this problem just happens so randomly and apparently after gaps in time. It is nice I guess that it goes away, but also makes it hard for me to really tell if my computer is fixed, or just a time bomb.