On windows 8 i had no problems but when i installed win 8.1 it says something about display drivers in photoshop (just first time i installed it) and always in mirillis action when i switch to desktop capture and it keeps popping errors (in mirillis) and the screen flashes and then i have to restart my PC since i can't do anything. I would install older drivers but these are only ones that support windows 8 since my GPU is old (HD4730)