Grey screening

Hey,

I am kind of new to forums etc, hoping I posted this correctly.

As you all seem to know what you're on about with DayZ internal code etc...
Whenever I join (99% of infistar servers) I get a white line on my screen and I am crashed into a grey screen??

Any help would be amazing <3

Regards,
Dan

Makesure your game is not opted into beta's kid, this would fix it:

Will give it a go now, thanks for the supportive reply.

EDIT: It isn't opted in for any Betas, I think it's something purely to do with Infistar.
I have reinstalled all of the ArmA games that you need for DayZ and it seems to have the problem still persisting.

Any other ideas? - Thanks