Error with my xperia U

[AuroMB]

Dear all, Hi, I hope you can help me, I have an Xperia U but yesterday suddenly when I tried to turn on, It gets stuck in the black screen with the sony logo, It doesnt work, the computer doesnt recognize it. Could you help me?

[Uliwooly]

Charge your phone for about 30min then repair your phone with SUS

Update Service (SUS)