I had "snow" appear on my screen... Dying GPU?


Dreadnought

macrumors 68020
Jul 22, 2002
2,055
14
Almere, The Netherlands
Could also be from overheating or a component that's broken. Monitor your temps with istat or a similair app. Concerning dust use a fan control app to set your fans on the highest rpm to try to blow out dust.