Over the past two days my Pc has been behaving very strange!!! When I startup I get a Dialogue Box with my user name and asking for a password. Fortunately, when I click OK (without entering a password) it takes me straight to my Desktop and everything is fine. My concern is,that some time when I click OK, the PC will lock and insist on a password before I can continue. Can anyone give me some good advice please? I am in a state of anxiety everytime I click OK in case I am refused access!!!!!! Many thanks Mike.