If you know when the keylogger got into your computer system, you can take steps to turn back the clock on your computer—essentially removing all items downloaded onto your computer up until a certain point. This is called a system restore. Though it is cleaner, it is also a little more difficult to gauge because you will not always know when the keylogger can in contact with your computer.
Click on your start menu and type in “System Restore." Open the system restore center when it pops up to be directed to the system restore box.
Click “Restore System to an Earlier Time."
Select the time you want to restore the computer to. This is the tricky part because it will require you to know when the keylogger got onto your computer. Select any time before that happened and select “Start." This will take time to complete the system restore. Your computer may stop and restart many times during the duration of the system restore. Once it is finished, the steel keylogger will be removed and your computer will be back to its old, safe self.
Restoring your computer will not affect any of your documents that you have worked on during that time. The restoration of your computer's systems will only affect items that were downloaded on your computer, either manually or automatically through a third party. This makes restoring your computer to an earlier time a good remedy for most viruses.
However, it is important to note that restoring your computer to an earlier date will not alter the information already obtained by the keylogger. This being the case, it is important for you to take additional action against the information that you potentially could already have lost. The restoration of the computer system will certainly eliminate the virus from your computer, but it will do nothing to fix the damage that has already been incurred. If you want to protect your personal information, you will need to take action to prevent the keylogger from ever encountering your computer.