Yesterday my pword to get into my computer was not recognised and the keyboard wouldn't work?

basically vista doe's have a few problems including freezing go to www.microsoft.com/downloads and make sure you have the up to date downloads which include a patch to rectify this problem, you can if you like open another account with a different p word in case it happens again or remove the pword completely make sure if you use a pword that you enter in correctly even a little error will cause it to reject your pword.i dont have a pword on my computor all my private files are encrypted to prevent access to unauthorised users.