PC shuts down while gaming (otherwise not)

[julianstyrer]

PC Specs:

Processor
Intel(R) Core(TM) i5-2500K CPU @ 3.30GHz


Video Card
NVIDIA GeForce GTX 970


RAM
8.0 GB


Operating System
Microsoft Windows 8 Professional Edition (build 9200), 64-bit


BIOS
Version
Intel Corp. BAP6710H.86A.0055.2011.0215.1656


DVD
TSSTcorp CDDVDW SH-222AB
CD
TSSTcorp CDDVDW SH-222AB

Like alot of other posts on the site, i've experienced complete pc shutdowns during gaming. I can surf the internet/youtube for hours with no issues, but once it gets intense my pc will not have it. Temperatures are fine, 40+ for my cpu, and 60-65 for my gpu. I've recently added a new cabinet with fresh fans, aswell as cooler master hyper 212 for my cpu. I initially thought temps were the issue, and then I had suspicions about my PSU but it's a 750w, although very old it should make the cut right? (for the specs I have). I've encountered random issues like explorer.exe crashing and unable to be rerun through task manager. My comp has also beeped twice in a row, of which I could somewhat decipher was a memory ram issue (from intel code error lists), but can ram really cause pc shutdown?

I'd love to get some professional eyes on this because i've run out of options myself. I'll gladly supply with screenshots and other info to get a *somewhat* more focused troubleshoot, at this point i'm just buying new shit left right and center lol. Many thanks for reply!

 

[dragonoar]

What is your PSU model ? Please be specific.

 

[herrwizo]

Exactly. 750W tells nothing. Which brand/model exactly? Some manufacturers overrate their power by double (so, an 800W PSU might provide 400W for real in those cases). Even worse, all PSUs lose some power with age. You likely have a bad quality+old PSU combo.

 

[julianstyrer]

https://www.proshop.dk/Stroemforsyning/Inter-Tech-Energon-EPS-750W-Stroemforsyning-750-Watt-135-mm-80-Plus-Ikke-certificeret/2147644

Sorry for linking in a different language, but this is the exact one i'm using! (i'd reckon i've used it for the past 5-10 years)

 

[julianstyrer]

So yesterday I went out and bought a corsair cx600 PSU, I thought regardless of the help i'd receive on here, I needed an upgrade. But turns out the cx600 won't fit my motherboard
http://ark.intel.com/products/50089/Intel-Desktop-Board-DP67DE
Most cables will fit, except a 2x2 pin socket which the corsair cx600 does not have. Would anyone be willing to suggest a decent PSU that'll run with my current specs, and fit onto the DP67DE motherboard?

 

[herrwizo]

It should fit. Can you please post a photo of that problematic connector on your mobo?

 

[herrwizo]

Nevermind, I found a picture of your mobo online. Is that the white square connector with 4 pins on the top-right part of the image, close to the CPU?

http://www.gtweb.net/Image/ImageDictionary/37/4

If so, this is the CPU power connector, and your CX600 definitely has one.

You need to use "EPS12V" connector on your PSU - it has 8 pins, but 4 of them will fit, and 4 will have to remain unconnected. 8 pins on the PSU are provided because there are motherboards which use all 8.

 

[julianstyrer]

I see, well thing is I did thrust it on with an 8pin like you mention, and it did seem like there was going power through everything, motherboard, gfx etc.(lights glowing) But Computer wouldn't turn on. I just assumed from that, that my little stunt didn't work. But you're confirming it should fit - any idea as to what else might have gone wrong? I'm positive all cables are connected properly, pretty much everything is connected as my old PSU was connected to. Atm i've put my old psu back in and I can turn on my computer again but the gaming/shutting down part still persists

 

[herrwizo]

If you can turn the PC on with old PSU, and not with the new, it looks to me that your new one is DOA and needs to be replaced. Corsair CX PSUs are not very reliable and now you see why, unfortunately. You purchased it before anyone could suggest a better unit. I would suggest to replace this Corsair with XFX 550W unit instead, but if you can only replace it for the same unit, you have no choice.