Occasionally when I wake my computer the screen stays black and I have to restart the comp. Other times the screen is "choppy" and takes a few minutes to "wake". The card is an XFX 7850
If it has a Fan it may need to be cleaned or the fan might be on its last legs. Otherwise if its passive i have no clue, Maybe a driver or a Heating issue?
Fan is working good, cleaned all the dust out. Yesterday the screen went black while watching a video and I had to restart comp. When it powered back on the picture was choppy and took about 5 minutes to clear up