Default [Q] Sony Xperia S SOFT BrITCH

hello ,
IM NEWBIES [NOOB] in Here And I NEED HELP NOW !!

im using sony xperia S LT26i a month ago , but i has newer problem like soft britch
the XPERIA won't to turn ON , and Stuck at the logo SONY. it Can [Flashmode or Fastboot mode.]
and suddenly , my device is turned OFF. After im using Flashmode [Power + Volume Down]. And now ,Won't Boot , unResponsive ,won't Flashmode or BootMode [ I think it Dies and need help !!!].
So , im Charging it and come RED LED NOTIFICATION But i Try Press Power Button and can't turn op . 25 Minutes Later , My Device is Turn on but Stuck at Logo SONY [ With Charging plugged in] So , im unplugged the charging and the RED LED NOTIFCATION turn off ,my device too. after that i can;t Turn on my SONY MOBILE S

How to Fix problem ???

Please read my post , Im new here . And i Need help ASAP for SOLVE this PROBLEM
THANKS YOU