Can you find where you made the initial backup?! e.g F:/BACKUP! It is then in a folder named as the name of your computer e.g DELLVISTA. Once you find that folder, make another copy of it and copy that into another folder just to be safe. Now, do the system backup again pointing it into the same directory as you did the first time round, let it do its job and after that, copy the original backup file into the original place. After all that, in System restore click use an older backup file and use the one that matches the date and time that you initially made the backup.
