I sometimes get a GreenSOD while playing League Of Legends. I can still hear my sound and my mic works for like 3 seconds (tested using Skype), after the 3 seconds I hear a loud, buzzing sound. Alt+Tabbing, CTRL+ALT+DEL etc. don't work. I didn't have it for like a week because I changed something in my game settings, updated drivers etc. (I think.) But this afternoon I had it again, twice. I know it's not overheating of my GPU/CPU and my PC is only like 2 months old so I guess failing hardware shouldn't be the case, already tested the RAM with Memtest86 but no issues.
The green screen is just a solid colour green, always the same:
All help is appreciated, thanks in advance!
Here the DM_Log: BEASTKNAKER-03-Apr-16_165448_77.zip
EDIT: I can't find anything in the eventvwr, except for Event ID: 41 (The system has rebooted without cleanly shutting down first. This error could be caused if the system stopped responding, crashed, or lost power unexpectedly.) I think it's there because I turned of the PC by holding the power button.