Share your experience!
If you have internet and location enabled,you might be able to unlock it using:
- gmail - recover
- myxperia - if you change the PIN/password
- google device manager
If the above is not helping,you have to perform a software repair.
Sorry to say but but your only option it to perform a system repair which will erase all data unless it's on a SD card then you would want to remove this 1st, It is for security reasons that that this happens, To perform a system repair follow the below guide
Performing a system repair using PC Companion as this will factory reset your phone
Switch off your phone and unplug from Pc (Hold volume up and power for around 10 seconds)
Start PC Companion and select Support zone then Update my phone/tablet then in Blue Repair my phone/tablet and follow the on screen instructions - When prompted connect your phone still switched off holding volume down or back button - This should start the repair or reformat process
If you are using Windows 8/8.1 or a 64bit operating system then adjust the settings for PC Companion and run in compatibility mode and chose Windows 7 or XP