XPERIA C screen has gone blank but phone is still turned on

[1h]

my xperia c screen is blank it shows nothing bt its on coz when i press my lock screen pin it vibrates bt it nothing is visible..

[_alexdon_]

You may need to perform a software repair using PC Companion.The process will erase all internal memory.You might need to charge your device for about 1-2 hours before so the device has at least 60% battery.

Make sure the device is not connected to computer or laptop and turned off (sometimes you have to press power button and volume up until the device vibrates 3 times or on some devices you have to press the small button near the SIM tray or on the back of the device).

Open PC companion->support zone->phone/tablet software update->repair my phone/tablet blue highlighted.Follow the steps given,do not connect your phone until prompted to press volume down while plugging USB cable. If PC companion does not start the repair process, you might need to run it in compatibility mode with Windows 7 (in some cases XP).

[pratheeshnair]

I also have the same problem with my new c3. I jad purchased it on 04/01/2015. After the initial charging as recommended by the company I had switched on the device and changed the pre stored wallpaper to lock screen option. After that my phones screen becomes black and it starts blinking and unfortunately the touch doesnt working. I had switched off the mobile several times as recommended by the sony support staff and till it doesnt work. Is this a major issue? How can i resolve it?

[beate]

i also have that problem, and i will repair my xperia whit xperia companion, but my phone is still gone blank!

What i have to do?