Hello friends I am using Acer Aspire 5920G laptop in which I am using Windows vista. My laptop was working very well. Now I have upgraded my laptop with ATI Mobility Radeon hd 4650 graphic card and after that when I have start my laptop at that time I get black screen. Now when my laptop starts at that time my system boots properly but after that I get black screen. Now please tell me what I should do to fix this issue.
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