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Its a pretty useless windows feature.
If anything. you should download the latest drivers for your hardware rather than go backwards. If you have installed a corrupted drive, or a driver that does damage to the kernel, than it's a pretty evil driver and more than a roll back would be required to fix your system or stop it blue screening. And It looks like if rollback doesn't work you use other methods to fix your problem anyway, methods which you could of used in the first place.