There is an issue where AutoCAD 2004 will install without issue, but it never opens. When the shortcut is opened, there is the spinning green circle next to the mouse cursor for a second, but then it goes away and nothing ever happens. No errors, no splash screen, nothing other than the spinning green circle. I have tried uninstalling autocad and reinstalling it, have tried using the option to repair the installation, and the option to repair the registry entries as well from the autocad installer. I tried running the application in compatibility mode for everything from xp sp2 all the way up through vista. The system is a dell precision T3610 running windows 7 x64 which is fully updated. Thank you for any suggestions.