Upon installation of Revit Architecture 2012, my laptop encountered an error, and it was not successfully installed.
After trying to uninstall and reinstall at least 4 times, I have had no success; in fact Revit will not even allow itself to be uninstalled!
I have also uninstalled ALL Autodesk programs present on my computer, and still no luck.
It is definetely not a software/hardware limitation as I have just purchased a new laptop which far exceeds any requirements for the programs.
I think the setup I downloaded off the Autodesk website is corrupted, as no uninstall process is present in the program.
I need help urgently, as my homework pile will only grow!
You can try using this Utility from Microsoft to un-install an application that is not showing in the installed programs list.
http://support.microsoft.com/kb/2438651/
It walks you through a trouble shooter program. I have had good luck with it when I have trouble un-installing applications.