Share your experience!
i charged battery full few days ago and then it stayed till battery just run off, i didnt even touched it, just forgot it to home . now i came back, it was shut down, tryed to shut it on , and it not do anything, connected charger and not even chargeing light not show it charge the battery, connected with PC and it not show phone even in pc. even these hard reset methods not work. Have any idea what can be problem ?
Remove the battery > press and hold the power button for 10 seconds > place the battery back on > connect the phone to a wall charger > press and hold the power button for 10 seconds > let it charge for 2 to 3 hours
Once it turn on, repair it with PCC
Bridge (for Mac)
Alternatives on How to backup Xperias
http://talk.sonymobile.com/thread/36355
Looks like your Sony Xperia is dead anyway. I sugges u should go to the phone rapair store and have it checked.