Not to worry! Driver Reviver automatically performs a backup of your drivers, before it installs the driver updates on your computer. You're always one step away from loading your driver backups using Driver Reviver.
In addition to the driver backups, Driver Reviver also creates a System Restore point as a precautionary measure, just in case you want to use the Windows System Restore feature to restore your computer to an earlier date.
Quick Tip: How to manually backup your drivers: