Computer power cut off while gaming

TGYoshi

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May 1, 2013
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Since some time I have an issue with my relatively new computer (a few months old).
It decides to cut the power off OR completely freezes and keeps displaying what it was displaying already forever until I force a shutdown (sound gets turned off, no stutter). It cuts the power in certain games and it freezes in other games (seemingly). This all happens completely random, it can be after an hour of playtime, after 3 minutes, or just not at all..
In-game it's completely unexpected. No performance drops before it happens, all smooth. It just decides to cut off.
If I do not play games it never ever happens. Watching streams or so is all fine.
It however seems to occur whenever some action is made in-game (e.g. while taking a jump, or in e.g. Dota 2, the game ended, go to main menu -> power cut).

Anyway, first I thought about temperatures/overheating.
Temperatures seem to be fine tho.

Idle: http://i.imgur.com/t7e35h3.png

Ingame: http://i.imgur.com/u55heJi.png

Both seem fine.
All fans seem to be working fine, clean etc. without result.
Cold air is blown out of my pc at all times. (at least the front of it)
The computer starts up as quick as it always did, I never hear weird sounds, just a blowing fan or sometimes my HD which isn't anything weird.
Updating graphic drivers yielded no result either.
A complete malware scan didn't result in anything as well. (The malware scan takes up 100% cpu which didn't lock my pc up, by the way.)

I personally start to run out of ideas.

An interesting detail could be that I've recently purchased a new (primary) screen which I use together with my old one. Obviously attached to the same graphics card and it all works fine. I'm not sure if this is related and I doubt it personally.

The only thing attached to the power point is my PC and an extension cord where I've attached my two screens onto.


Thanks for your time,

~TGY
 

TGYoshi

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May 1, 2013
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18,510


RealTemp did not result in much different temperatures (2 degrees difference..) compared to the used hardware monitor, except that it doesn't display the GPU temps.
 
There can be a few causes to the problem you have.
1. The first one could be over heating.
2. The Psu is Faulty or under too much load to remain stable all the time.
3. The memory in your system is faulty, or is under vol ted causing the random locking of the computer.
4. The hard disk drive is damaged in some way/ has bad sectors on it causing the crashing.

A few things to check.
Good luck.
 

TGYoshi

Distinguished
May 1, 2013
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18,510


GFX Card: Asus 2GB D5 X GTX660 Ti-DC2T R
CPU: Int Core i5-3570K 3400 1155 BOX
CPU Cooler: Scythe Mugen 3 Rev.B SCMG-3100
PSU: PCP&C Silencer Mk II 750W ATX23
SSD: SSD 128GB 175/500 M4 SA3 CRU
Mobo: GiBy GA-H77-D3H H77 RG SA
RAM: D3 8GB 1333-999 Blu K2 KHX
HDD: HGST 1TB HUA722010CLA331 A7K2000 SA2
 

TGYoshi

Distinguished
May 1, 2013
4
0
18,510
I was unable to use my PC for some time because the problem worsened in such a way my PC refused to get past the Windows logo.

In the end the cause seems to be a faulty graphics card. So far so good.