My mobile is suddenly switch off before 5 days then I try to switch on with press power key & the n power & volume key but it's not restart then I connect my phone with xperia companion software but no result, while I connect my mobile with software that time the RED LED is blinking in mobie {near camera) while I select software repair the process is initialized (some time download) but after some time software error repair error is showing on display & ask me to contact Sony support.
In past also this type of issue face twice but that time it was resolve through Expedia companion software,