I have recently installed Windows 7 on my Acer Aspire 5820G laptop. Everything went as expected but the problem occurs when it comes to HD 5650 card. I think the problem lies with the drivers but I have already installed them and still there is no fix to it. When I click on Catalyst Control Center, I have a message which says Windows is missing the necessary drivers to recognize the device. I tried uninstalling and then reinstalling them once again but nothing solves the problem. Can you help me to solve this problem?