Computer Crashing Without Warning

LordAwesomness

Reputable
Sep 17, 2014
6
0
4,510
So around two months ago, I built my very first computer. I like to think it's pretty fast, and it runs really well. But starting today, I've had this issue. I'll be doing something simple like browsing the internet (Google Chrome 64-bit Version 37.0.2062.120 m), and all of a sudden the computer will freeze.
The image will completely freeze where it is, and the audio will start skipping over and over again. After around twenty seconds of this, my computer powers itself down without any warning, and does not turn itself back on. When it comes back on, there's absolutely no evidence that this ever happened, no "Windows failed to shut down correctly" screen or otherwise. It simply boots back into Windows as usual.
I'd be happy to try any troubleshooting suggestions I'm given. Thanks for your help! Specs are below.

My System:
CPU: Intel Core i7-4790K @ 4.0 GHz
GPU: Asus DirectCU II OC - Nvidia GeForce GTX760
PSU: Cooler Master GXII 750W
RAM: Crucial Ballistix 1333MHz 16GB (4GB x 4)
MB: Asus Maximus VI Hero
Cooling: Corsair Hydro Series H80i

Don't know why anyone would need this, but:
Mouse: UtechSmart Venus
Keyboard: Corsair Raptor K40
Monitor: HP w2207h
Headset: Plantronics somethingrather (sorry, don't know)
 
Solution
Probably PSU as it is the only low quality thing in your build.

It is not good and should be replaced with a quality unit. Antec, XFX, Seasonic are who to look for.

LordAwesomness

Reputable
Sep 17, 2014
6
0
4,510


I looked there, and the only errors that I could find were Windows confirming that the system shut down unexpectedly. No errors anywhere else around those times.