while updating to Android 4.0- i got a problem

[#1]

my mobile is sony ericsson xperia Neo v- using PC Companion i tried to update from android 2.3 to 4.0 -while updating due to system hang up-I restarted my pc an disconnected  the usb cable and again connected then now my phone is not working

[Nabeel]

Backup everything as it will erase all data on phone (sms, contacts,apps)

Update/Repair your phone via PCC or SUS

PCC (PC COMPANION) – Repair your software with this .First do the setup without connecting your mobile to pc.(only connect when you are asked to).

Do it as follow >> PCC > SUPPORT ZONE> SOFTWARE UPDATE> REPAIR SOFTWARE (written with blue)  

PC Companion http://www.sonymobile.com/global-en/tools/pc-companion/

SUS ( Sony Update Service)  ... download and install it on pc and follow the on-screen instructions http://www-support-downloads.sonymobile.com/Software%20Downloads/Update_Service_Setup-2.11.12.5.exe

                  or

http://www.sonymobile.com/global-en/tools/update-service/

Both the links are same