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very old pc running windows xp updated firefox now windows is asking for a logon i don,t have a password for windows have tried using administrator but does not work

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  • Last reply by cor-el

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i have a 7 year old computer running windows xp. a pop up appeared to update firefox, i clicked on it and the next time i started up the pc there was a logon box for windows. i have never had to logon to windows before and i don't know of any password, have tried using administrator but this doesn't work. have i downloaded a virus and how do i get back on to my pc, thanks

i have a 7 year old computer running windows xp. a pop up appeared to update firefox, i clicked on it and the next time i started up the pc there was a logon box for windows. i have never had to logon to windows before and i don't know of any password, have tried using administrator but this doesn't work. have i downloaded a virus and how do i get back on to my pc, thanks

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Try to ask advice on a Windows oriented forum.