:
Navigate to your profile and look for the .VirtualBox folder. For example, C:\Users\your.name\.VirtualBox
Copy the VirtualBox.xml to somewhere safe, like your desktop
Uninstall VirtualBox
Delete the .VirtualBox folder
Re-install VirtualBox and the option package.
Start VirtualBox
Close VirtualBox
Navigate to your profile and look for the .VirtualBox folder. For example, C:\Users\your.name\.VirtualBox
Rename the VirtualBox.xml to VirtualBox.xml.old
Copy your original VirtualBox.xml to the .VirtualBox folder
Start VirtualBox