Nasel jsem tohle : http://support.amd.com/us/kbarticles/Pages/737-271 16RadeonSeries-ATIKMDAGhasstoppedrespondingerrorme ssages.aspx
to by mel byt ten muj problem....

"The issue occurs when the Timeout Detection and Recovery (TDR) feature available in Windows Vista® and Windows 7 detects that the graphics card (GPU) has not responded within a predetermined period of time and reinitializes it with the Windows Display Driver Model (WDDM) to prevent the need to reboot. There is no single cause for a TDR event to be triggered."

stejne tomu moc nerozumim :) prosim vysvetlete