02-11-2013 09:46 AM
02-11-2013 01:08 PM
First reset your BlackBerry ID password , to do that refer to this KB :
KB26361 :How to change or reset a BlackBerry ID password.
login with your BlackBerry ID and password on your device , If you are using BBM 7 then your BBM Contacts are stored with your BlackBerry ID,when you use your BlackBerry ID it will restore it back on your device.
Regarding your Address book unless you have a backup or using BlackBerry Protect there is no way to restore those lost Contact.