For some time I have been running windows vista without knowing the administrator password. I need it now. I tried the method utilizing computer manager but the utility after "shared folders" (something about user groups) is missing the only thing following shared folders is "reliability and performance", and "device manager". I have a would be computer guru in the house and I suspect he has taken over the computer. He is 25 and I am 68 .I am his father. is there a way to get the entry about "groups " back onto my computer manager utility. I would like to gain control of my computer again.