I am a game lover, for this I assembled my Dell machine with windows 7 OS, along with this other specifications are like Intel core 2 duo processor and Ati radeon high definition graphical interface. I recently installed Diablo 2 game in my machine, and after that I encountered a problem regarding the graphical performance and also with the machine performance. The graphics is messed with so many colors, along with this also if I open more than one program, while the gaming application is open; all the program windows are messed in a single image into my machine screen. Is the problem is for the gaming application or anything else, canít understand. Suggest me some thing to resolve this problem? Any suggestion regarding this will be appreciated greatly.