I had been running Windows 7 on my machine. Recently i had installed the latest drivers for the ATI Radeon Hd 4800 graphic card on my system. Now the problem is that when i use windows 7 I get a corrupted screen. I tried to install ATI Catalyst driver (which was O.K. with previous Sapphire (X850) card) from console, but it did not help. The problem starts when windows downloads drivers and even when I install AMD ones it still refuses to show a clear screen. I have had this problem even from the windows 7 setup/installation. Can any one tell me that why i'm having ATI Radeon HD 4800 Series problem on Windows 7? Any one has any idea about it? Kindly help me to get rid of the above issue. Thanks.