I doubt whether we do "all know cs 1.6" but I'm guessing it's the 'counterstrike' mod for half-life? Anyway, if the problem only occurs when you run the game then there's a good chance you need to update your graphics drivers. There must be a forum for players somewhere & I'll bet you won't be the first one to have the problem so you may be better asking the question there.
"I've always been mad, I know I've been mad, like the most of us..."
The information on Computing.Net is the opinions of its users. Such
opinions may not be accurate and they are to be used at your own risk.
Computing.Net cannot verify the validity of the statements made on this
site. Computing.Net and Purch hereby disclaim all responsibility
and liability for the content of Computing.Net and its accuracy.