A plug to get some disk imaging software at this point maybe. It doesn't half save a great deal of trouble if you have a backup of the entire OS saved on another partition or disk (external or internal). If something awful happens to the computer, the image can be used to revert the OS back to a good condition.
It's always difficult to be sure the OS is just how it was before when uninstalling an update (or program) and then using System Restore. A disk image just overwrites everything though and you can be sure the system is exactly how it was before anything was done.