I was having alot of problems from son's kazaa downloads, etc. So I thought I would wipe out the harddrive and start over fresh. The first time I put in the ME restore cds the windows screen came up but it wouldn't let me use the CD drive. So I put in the restore CDs and there was an error message about the softwear being expired to contact the vendor. Once again I put in the first cd and now a new error message says"invalid system disk, replace and press any key" I'm a real dummy who had no business touching it. Somebody with alot of patience please help.