My windows xp professional is only allowing one limited user and the administrator to log on. The other 2 users, myself with administrator facilities, the other a limirted user are not able to log on. Starting up at different check points and using the options in safe mode did not work. Each time it starts up with the administrators log on screen. Th only exceptin is when the one limited user logson, it all normal for him. How can I get back to a normal start? The PC a one month old AMD P4, 1.8 gig, 256 MB DDR ram,