A [B]VHD [/B]is a Virtual Hard Disc, go into your start up programs and look for anything resembling a VHD and uncheck it, its problably starting on startup and as it is being used you cant delete it. Uncheck it. and then try to delete it. If that doesn’t work there is a progam called : Unlocker’ Its free,(GOOGLE it) try it it will unlock the VHD file from your hard drive and after a reboot you should be good to go. You wont even have to reformat.