computer randomly turning off

[rawrturkey]

for some reason my computer is randomly turning off the only error I can find in the windows event viewer is "kernel power" I can't figure out why it's doing it as far as I know my psu is good enough for my setup.

 

• CPU
  i7-4790k @ 4ghz
• Motherboard
  asus rog MAXIMUS VII HERO
• RAM
  8,192 MB Kingston DDR3 @ 932.5 MHz  x 4
• GPU
  2x NVIDIA GeForce GTX 970 sli
• Case
  corsair Carbide Series 300R
• Storage
  250gb samsung EVO 850 500gb samsung EVO 850 1tb segate sshd
• PSU
  Novatech 850W Power Station V2
• Display(s)
  aoc g2460pf 144hz
• Cooling
  2 stock case fans corsair h100 water cooler
• Keyboard
  corsair k30 (needs upgrading)
• Mouse
  logitech g303
• Sound
  no idea
• Operating System
  windows 10 64bit home