i have a xfx ati radeon hd 5850 znfv. it is white screening black screened once, glitch's on desk top while moving windows and even at idle. i have an older board ASRock 939 socket and am stuck on how to down clock. i have read that this model is overclocked from factory and that if having problems like i am then just tune down the overclock ????????? im not sure.
Had computer running perfect with ati radeon x800 xl.