Q: new macbook pro password not working after migration

Hi I just did a migration using Time Machine from an old 2010 11" MBA to a new 2013 13" rMBP. Im not sure if the migration was completely successfully as I think the time capsule crashed halfway. Anyway when I tried to login into the new machine it recognises all the accounts/usernames fine (I only have 2 accounts and the acount names are the same as the old machine), BUT WHEN I ENTER THE PASSWORD, IT DOESNT RECOGNISE THIS. So basically I cant login and am stuck on the login screen.

Help dont know what to do next. Thanks,