Blinking screen

[Mayumi]

After I change wallpaper my Xperia C3 phone blinks and does not allow me to touch any icon from the home screen. I've tried resetting it by holding power button and vol up but does not work, I tried press the off buttong near the SIM CARD case but nothing works. please help!

[Thommo]

So you can't switch off your device via any method?

[Mayumi]

Hey, thanks for replying appreciate it, It can be switch off, but when I switch in On, same thing happens, Home screen still blinking and I cannot touch any icon. 

[Thommo]

Try performing a system repair using PC Companion as this will often fix issues - This will factory reset your phone and erase all data so best to backup before you begin

Switch off your phone and unplug from Pc (Hold volume up and power for around 10 seconds)
Start PC Companion and select Support zone then Update my phone/tablet then in Blue Repair my phone/tablet and follow the on screen instructions - When prompted connect your phone still switched off holding volume down or back button - This should start the repair or reformat process

If you are using Windows 8/8.1 or a 64bit operating system then adjust the settings for PC Companion and run in compatibility mode and chose Windows 7 or XP

[Thommo]

If the above fails to help then I'm sorry to hear this but you would need to either return your device to the place of purchase or contact Xperia care and have your device inspected http://www.sonymobile.com/global-en/support/contact-us/

[Mayumi]

Thanks much Thommo!, I'll try it.. If maybe this would not work, well I guess the last resort is to return it and have it replaced Salamat