Uninstalling Autodesk Products

Question
Problems with uninstalling Autodesk products?

Answer
If the product is uninstalled via control panel further steps may be needed when reinstalling. You are advised to also delete the Autodesk program folder and Autodesk user profile settings (directories and registry entry).

http://knowledge.autodesk.com/support/autocad/troubleshooting/caas/sfdcarticles/sfdcarticles/How-to-remove-all-Autodesk-products-from-a-Windows-system.html