After a few beers a friend offered to backup my Windows 7 system in case my sytem crashed. I told him to go ahead and next day found that my free space had dropped from 215 Gb to 210 Gb and that I was unable to create a restore point. I asked what he had done, but he could not remember what programme he had use to do the backup. I know this is a very vague question, but any suggestions as to what I can do to find where this backup might be stored so that I can delete it and recover the 5Gb. Thanks in advance.