security password

[nins_beckham7]

please help me.when I press the power button it's asking for security password.It's not related to inbuilt password which users decide.I didn't give any security password.I can't  do anything.Sometimes home screen is available but when I try to gointo settings it again asking the same.  Please reply soon.                                      

[_alexdon_]

Check if the same occurs in safe mode:

http://talk.sonymobile.com/t5/FAQ/How-to-boot-your-phone-into-safe-mode/m-p/348008