Game Screen went wrong

[titan123]

When I was playing online , there was a grey screen, sometime it turns to different colors. But when I right click to scope on some weapon it shows the game clearly. I dont lag at all on the game its just the game it turn grey when I'm not scoping. How do I fix it?

[titan123]

I dont know if this is the problem but I downloaded the demo from filefront,
How do you upload picture I can paste it on to show