...
Check if you don't have Portroit Pro, SONAR, AutoDesk or Dell Backup and Recovery preinstalled on your PC. Uninstall it in match case.
If Dell Backup and Recovery is used by admins and cannot be removed, please check if the version of the application is >= 1.9.2.8 (the dependency in the shell overlay DLLs are removed in that version)
Modifier
I have a .NET Framework error on my Windows 7 computer
...