WHEA Uncorrectable Error

[j.dirona]

So over the past few months I have gotten the WHEA Uncorrectable-Error 3 or 4 times.

The only change I have made in my computer since building it (1.5 years ago) is upgrading my graphics to a 970 (although power shouldn't be a problem, see spec below).

 

My initial reaction would be a HDD failure but I ran CrystalDiskInfo and it said my disk was in good condition. 

 

The first 2 times it happened when playing The Banner Saga, although again I doubt it to be graphics since I've played much more intense games without ever having a problem with it. It just happened again while doing nothing more than working on a spreadsheet and having a few Chrome tabs open with a video playing in the background on youtube.

 

Anybody know what the problem might be? and how I could test to find out?

 

Thanks a bunch

 

Specs:

• CPU
  i5-4570S
• Motherboard
  Asus Maximus VI Hero
• RAM
  hyper-x 8gb 1600
• GPU
  Gigabyte GTX 970 G1
• Case
  Corsair 500R
• Storage
  1Tb Western Digital
• PSU
  Corsair 600M