my sony xperia go st27i went dark all of a sudden and don't wanna start

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hi , i have a sony xperia go st27i and i was talking on the phone then right after for no reason it went dark , i try to start it but nothing , even when i plug it in the charger nothing , i tried hard reset but also nothing , i can't even remove the battery and put it back cause it's built in , can anyone help

Thank you very much

[DavidH2000 · Accepted solution]

hey try to press vol up and on/off button down to the phone have vibrate 3 times.......(15 sek or so)

[Uliwooly]

Connect the phone to a wall charger > press and hold power & volume up for 10 seconds > let it charge for 2 or 3 hours > the repair it with PCC 

PC Companion (PCC)

Bridge (for Mac)

Alternatives on How to backup Xperias

http://talk.sonymobile.com/thread/36355

[Uliwooly]

If PCC doesn't work then you will have to contact your local Xperia Care

http://support.sonymobile.com/global-en/contactUs/

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Thank you so much , it's working again