log on failure
brand new 2 Ubantu & set up standard Ubantu compartment accessed via 1 user name only and password.
1st few times all good but now suddenly, unexpectedly password declared invalid.
Had written down password so it is correct & not entry error.
Not know how to reset password or bypass 'username/password log on screen'
Am on an Acer 5542G with windows 7 home premium.