Revo Uninstaller Pro can create a full Registry backup once each day it is started. By default, this option is not selected.
A full Registry backup is, by default, created for each program uninstall.
Depending on your operating system, the steps to restore a full Registry backups are as follows:
You need to start the computer in an unusual way to find the Command Prompt option.
Begin by pressing and holding the Shift key and only then may you reboot your computer as normal. Continue to hold the key down until the computer fully restarts and you see the Choose an Option screen.
Now proceed as follows: