I just upgraded my desktop to Windows 7 from XP pro 32 bit. Im running Autocad Electrical 2009. When I opened any old drawing files, they didnt display properly in model space paper space, and Autocad locked up if I moved the mouse around or tried zooming in an out. I took your suggestion of running the program in Windows XP compatibility mode and it seems to have fixed the problem. Thanks to all who posted help. I was worried I was gonna have to upgrade to the latest version. It would have been cheaper to buy a used PC and Windows XP pro license to keep the old version running, than pay for the upgrade from 2009 to 2013.
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![Autodesk Design & Make Report](https://forums.autodesk.com/t5/image/serverpage/image-id/1350519iCB55845EBFC43016/image-size/large?v=v2&px=999" "Autodesk Design & Make Report")
