Problem removing and reinstalling VirtualBox

[livellacri]

I'm sorry for my English but I am translating with Google Translate.

Good Evening.
Due to some problem born after an update to VirtualBox I decided to remove and reinstall it.
I went to the control panel for the removal, but when I went to uninstall it appeared to me a window asking you to select the installation file of VirtualBox (which I no longer have). [Capture attached].
So I decided to make a forced removal, removing the Oracle folder from the Programs folder.
VirtualBox now no longer in the program list of the control panel, but if I try to install the new version is still installed and I can not remove it.
How can I fix?
Thank You

[mpack]

There are several ways to fix the original problem (basically: download the missing file and put it where the error message says it should be), but now that you have deleted the files most of these recovery options are no longer available.

The only thing that springs to mind now is going through the registry and deleting all keys that mention VirtualBox or VBox.