my z1 won't switch on

[adi906]

I switch offd my phone to charge it and when I switched it on it shows the Sony and android logo and then again it restarts and it is happening continuously so I used the sim cover button to force switch off it and again switched it on but the same thing happened

[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

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 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/

[adi906]

Okay thanks I'll do this asap and tell you what happens