Use this link, submit a ticket, see if they can help.
Problems pop up on your last update? Additionally, is it only steam games? Some games come loaded with launch opts that could mess with a driver update (specifically ARMA,2/oa), it's possible that's happening to you on some and not others.
Are your graphics issues consistent across all the games you have trouble with? ie; identical frame lag, gpu spikes etc, extreme vertical tear..