I fogot my password and i want to reformat my system

really? Why?
Use their forgotten user and or password system..

Gotta contact Sony. They can clear the pw and you can choose a new one.

Forgetting passwords is not generally a good idea, however to assist you you will need to purchase some kind of password cracker which I am not sure is considered ethical advice. An alternative would be to reinstall the operating system albeit this would mean losing all your current data contained within the system. There are free password cracking tools/software but which one used is your choice

What is Mobile Phone Brand and model,you forget the security code or password means You need to master reset the Phone,You can get the master reset code from here
Onlinegsmunlock and reset from the security Lock Or password lock.

Press either delete or f2 during the boot up process to enter BIOS scroll down to set user password you can change or remove your password from there

good luck

you will need to access the router setup and you will find the wireless password there. if you don't know the password to access the router then you will need to reset the router and reconfigure the router.
Click Here for step by step solution

Reset it by holding down the STOP button on the unit itself without any disc inside.

try 0000 works for most phones good luck

contact microsoft for thios

FLASH MEMORY CARD