I have recently installed Assassin's Creed 2 on my desktop. I am using Windows Vista with 1 GB RAM memory. The problem is that the game freezes withing 20 seconds of playing. I had no problems while installing the game. But when I play the game it just freezes within 20 seconds and there is a black screen on my desktop. I have to got to the Task Manager to end the game process. Why is this happening?
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