Hi All, First time I have posted here......ok, brand new install of Win7 x64. I have just my username acc as Administrator, no UAC levels selected, take ownership context menu installed, used it only on one or two folders only to allow access for software installs. Have installed all my proggies, say 30 odd. Ok, so there is an unknown user account - see reg pic (that is not my image but mine is the same unknown user) It appears on all folders practiacally in all my drives, go to the registry and it sits there along with a classes version of that reg folder, so two folders under the hkey_users. so its about 4 S folders with short names like S-1-111-0000 and then these two folders with the long numbers, tha same that you see in the pic. So how do I get rid of the user folders from the Reg and the security tab from all folders. I have tried to delete them from reg but the issue is most of my programs are found under this user?? When I only have one user which I am the administrator for. Is it possible to export the contents of these reg folders and then import them to another folder under users like my username, I dont know how to do it. OR IS THERE A SIMPLER WAY?? Many thanks in advance.