Hello thanks for your anwser!
Well I have got a gtx 1080, 32gb ram, Intel(R) Core(TM) i7-9700K CPU @ 3.60GHz 3.60 GHz, Gigabyte Z390 M Gaming Motherboard
I am playing modern combat soo no mods.
It happens everytime.
New drivers
When I join a KOTH game and kill someone with Rockets on a Jet or Heli my whole PC crashes. I already checked files on Steam, seems fine. And also updated the graphic card soo I dont know why this happens.