Serious problem with my xperia J

[Fifi007]

First at all, Sorry for my English

I have my Sony Xperia J for a year now, and there hasn't been any problem yet. But yesterday, I tried to unlock my phone, nothing happened, the display didn't do anything.

So I started it another time, and then I couldn't even give on my code for my SIM-Card.

Now, I can't even see the 'Sony' brand and so not even the 'Xperia', I just see black screen, but the lamps at the bottom go on.

I really have no idea what I could do there, I tried to make a Software Update, but it seems to make the problem more difficult.

I really need your help, because I need my phone

Thanks

[_alexdon_]

Remove the battery,keep it out for 30 seconds,put it back in.Connect to wall charger,charge for 1 hour.Repair with sony update service after.

[Fifi007]

That doesn't help, if I start the phone, I can't see anything on the screen...

Do u have any other help? Otherwise I need to give it back to let it repair..

[_alexdon_]

Download sony update service and install it.You do not need your phone to be turned on to repair with sony update service.Just keep it charging for 1 hour before repairing.