I have owned this Sager NP8152 (Clevo P650RP6) for two years, and recently I've been getting a freeze with a black screen while playing games. I decided to reinstall windows 10, run windows memory dianostic as well as memtest, burn in test, and furmark. Furmark blackscreens that laptop after about 7 minutes (@ 70-74c).
I have used DDU and reinstalled both intel and nvidia graphics drivers and it still freezes. I am unsure now if this can be solved through software, or if it's a hardware issue.