Can't play games and movies show choppy

Ever since I installed windows 7 ultimate on my Dell Dimension 2400 my pc games crash on startup (NBA 2k10 to be specific) and my movies run slow and choppy. I have a ATI x1900 graphics card but when I go to Device Manager/Display Adapters it says Standard VGA Graphics Adapter. I am seriously considering uninstalling windows 7 and reinstalling xp. Before I go that far I wanted to see if there is anyway to get my games and movies working correctly on windows 7.

Hello and welcome to the forum!

If you have 32 bit Windows 7, install this - ATI Catalyst

If you have 64 bit Windows 7, install this - ATI Catalyst

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