Computers is crashing for some unknown reason, looks like a graphic card issue but nothing I've tried has fixed it

moreRNGplz

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Apr 6, 2014
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I really hope this is the appropriate thread

TL'DR Computer's crashing for unknown reason, crashes when I try to play games outside of Dark Souls and League of Legends (WItcher2, Skyrim, DMC, etc.). Already replaced the graphics card and I'm running a fresh Install of Windows 7 with all the updates. Computer techs at a recommended store cant fix it, tom'sHardware plz halp this is beyond me.

Specs- GPU: MSI Geforce GTX 760
CPU: AMD FX-8120 Eight-Core Processor
MOBO: ASRock 970 Extreme3
HDD: Seagate 500gb x2
600 watt Power Supply
Memory: 4gb Sector5 x2
4gb XMS3 x2
4 fans and 1 Khuler H2O Water Cooler
Connected to a 1080p Flatscreen TV through HDMI

Read on to see the full adventure of my past five days, but all the relevant information is up top

Okay so my issue has been going on for a fairly long time, my gaming PC crashes. It doesn't crash when I watch movies or browse the web but crashes whenever I try to play anything that isn't the original Dark Souls or League of Legends. I can play DS and LoL for hours on end and wont have any issues, but when I try to play Skyrim, The Witcher 2, DMC, even Path of Exile this thing goes haywire after about 10 minutes.
At first I thought "Oh, my video card must be getting old, perfect timing I've been wanting to do an upgrade. And while I'm at it ill go ahead and pick up two more sticks of RAM, that should help keep things nice and smooth." So off I go, to Microcenter to buy a new video card and some more RAM. I get home, replace the parts, hook everything back up and when I try to play any of the games listed above BAM, everything freezes and suddenly my monitor is a either a nice HD picture frame or a black screen saying no input.
"Crap, okay wonder what this issue could be then." I call the store back and ask them if this sort of thing has happened before, they say that it sounds like a bad card and to just bring it back and they will replace it. Sounds reasonable to me, not exactly unheard of so back to the store I go. I swap out cards and power on my system, start a game, and BAM, another frozen screen of disappointment. At this point I'm pretty disappointed and more than a little aggravated, so I call the store again. I get in contact with the service department and they recommend I bring my system in and have them take a look at it and see if they can resolve the issue. Okay well it'll be worth it if this gets resolved so off I go for my third trip to Microcenter.
I take my computer into the store on (of all days) April 1st and leave my rig in some hopefully competent hands. I'm told I'll get a call back within 24 hours and they'll let me know where they are in the repair process. Fair enough, I can catch up on some TV shows and and watch the LCS in the mean time, no problem. Well April 2rd rolls around, no call, but i check the website and the repair number I was given says my Computer is ready for pick up. No phone call yet but hey, the repair number says its good to go so I think its good to go. So I leave university on the 3rd and drive up there for the fourth time.
I walk in and give my number to the associate and when he types it in it brings up an order for some woman named (lets just say) Rebecca. I looked sideways at this a little bit.

I'm a male, woops wrong repair number

Okay so the ticket number I got was switched up with some extra printed copies of this ladies receipt. Inconvenient, but not the end of the world. So the associate apologises for the mix up and assures me again that I'll get a call within 24 hours. Okay well now that kinda sucks, but hey sh*t happens, roll with it.
Jump forward a day, its friday afternoon. I call the service department and get in contact with the tech who's working on my system. He says he running RAM diagnostics and think they may be causing the issue with the freezing and what not, and that he'll call me back within the hour and let me know what he finds. No call within two hours later, well thats a bit rude I felt, so I call the service area manager and ask him whats going on. He tells me hes going to find the tech and ask for me, so I wait and he tells me essentially what the tech told me, that they're doing diagnostics. Okay, screw it, let them do what they do and I'll call back tomorrow to see when I'll be able to pick up my rig.
Saturday I call, asking what they found, if anything, and the tech tells me that the extra RAM I got was not working properly and was most likely the reason for my issue. Alright, maybe I did something wrong, maybe the sticks were just bad, whatever the case, they said it wasn't freezing anymore and thats what I was hoping for. So I drive up there for trip number five to retrieve my rig and when I test it in store It doesn't freeze or blank screen when I start Witcher 2, which ran no problem for about 20 minutes where before It would just black screen/ freeze before I could walk ten steps.
Alright so I get home, I'm excited, I'm ready to conquer kingdoms and slay dragons. I pull up a chair, start Skyrim, get about 5 minutes in and BAM, frozen. I force restart (computers non responsive at this point, always is) and try something else. Witcher 2 was working in store surely that's got to work, NOPE.JPG, screen goes black just like before. So here I am, I looked online for hours trying to find a solution to this, at this point I'm pretty invested in the resolution of this issue, about 480$ invested. So I beg somebody, anybody who thinks they can help, plz halp :'(
 

TG_thoMz

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Feb 15, 2014
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Are you using HWmonitor? If not try it first, some of the temp monitors are way off like CoreTemp.
Or it could be your PSU.. Go to the nearest store try a new PSU and if it's not the problem then you can return it but i'd say there's a good chance it's the cause.

 

moreRNGplz

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Apr 6, 2014
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Okay, that makes more sense, MSI was way off

The GPU hits about 60C while the CPU still stays about 40-42C

Is there anyway to stress test the PSU and see if its falling off?

I'm not all that knowledgeable when it comes to voltages and what not so it goes a little above my head. When it comes to actually deciphering the readouts I get a little lost. Another thread suggested using Prime95 but I dont even know how to operate that really, heh

Edit: Also sorry about the really late response, It crashed again last night and i got a little angry with it
 

TG_thoMz

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Feb 15, 2014
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Sorry but the easiest way to check the PSU is just to try another one, like I said you can always return it. Prime95 is a stress test for you CPU and/or Memory and while it could rule out any issue with the GPU I highly doubt the GPU is the issue. The GPU draws more power than any other part of your PC and games like Skyrim stress the GPU which in turn stresses the PSU. Ruling out the PSU as the culprit is the very first thing I would try, after that unfortunately the problem would get pretty tricky to narrow down. Try running Chkdsk it could be a failing HDD. Other than that I really don't know..