Help , unable to login

Hello , i changed admin password. check it by locking and unlocking the pad lock.
change the admin password again under user and groups but when restart my machine i never take my password which i have set

i am using 10.7.4

Please help me

Please help me out guys

Did you activate Firmware Protection to see the padlock? Bad news if you did alas try strong magic.


http://support.apple.com/kb/HT1352