PC crashing frequently

[Lyoko006]

I built a new gaming PC about 3 weeks ago. Ever since I built it it has this problem where if I launch a CD, run a game, or just be on for to long the PC will crash and on rare occasions an error code will pop up saying watchdog violation or something. I've looked just about everywhere for an awnser but I can't find someone who has had the same problem.

Here are the specs (OS is windows 10)

CPU fan: Dark rock 3 190W TDP

Graphics card: GTX 980 wind force

CPU: Intel I5 6600K

Motherboard: Gigabyte GA-H170M-D3H/-GSM

Psu: EVGA 750 G2 supernova (imgot this one because I plan to get better graphics cards later on)

Hard drive: Seagate 1 Tb

Hard drive: HyperX solid slate drive 500GB

Ram: 2x Kingston 4GB

Thermal paste: Thermaltake TG-7 w/ diamond powder inside

Any info you can give will help.
Thank you

 

[LORDPrometheus]

I have a similar system (same psu in fact) and i get the same error code on occasion, usually ive found updating my drivers helps fix it but honestly i have no idea what causes it