PLEASE ADVISE (not sure where to post this but i require immediate help please)

I tried to log into my computer and the computer is saying my password is incorrect but its not ? i have had to log in using my wifes user id BUT I CANT GET TO MY DOCUMENTS, even when i go through Norton to try and see what is happening they ask me for my computer password and agin i cant log in so i cant get any help or advice either.

 

PLEASE HELP ME QUICKLY AND ADVISE WHAT IS HAPPENING