https://community.sony.es/t5/tablets/display-isn-t-responsible/m-p/3358486#M6817 <P>Try performing a system repair using <A href="http://www-support-downloads.sonymobile.com/Software%20Downloads/PC%20Companion/Sony%20PC%20Companion_Web.exe" target="_self" rel="nofollow noopener noreferrer">PC Companion</A> as this will often fix issues - This will factory reset your phone and erase all data<BR /><BR />Switch off your phone and unplug from Pc (Hold volume up and power for around 10 seconds)<BR />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<BR /><BR />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</P> Wed, 10 Jun 2015 09:55:21 GMT Thommo 2015-06-10T09:55:21Z https://community.sony.es/t5/tablets/display-isn-t-responsible/m-p/3358485#M6816 <P>Hi, I have trouble with display( Tablet Z wi-fi). When I has pushed on "switch on" button, I has seen green little quadrates on the sides and display has no answered. How I can repair it? Is the error connection with upgrade system?</P> Wed, 10 Jun 2015 09:25:18 GMT https://community.sony.es/t5/tablets/display-isn-t-responsible/m-p/3358485#M6816 AleksEy173 2015-06-10T09:25:18Z https://community.sony.es/t5/tablets/display-isn-t-responsible/m-p/3358486#M6817 <P>Try performing a system repair using <A href="http://www-support-downloads.sonymobile.com/Software%20Downloads/PC%20Companion/Sony%20PC%20Companion_Web.exe" target="_self" rel="nofollow noopener noreferrer">PC Companion</A> as this will often fix issues - This will factory reset your phone and erase all data<BR /><BR />Switch off your phone and unplug from Pc (Hold volume up and power for around 10 seconds)<BR />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<BR /><BR />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</P> Wed, 10 Jun 2015 09:55:21 GMT https://community.sony.es/t5/tablets/display-isn-t-responsible/m-p/3358486#M6817 Thommo 2015-06-10T09:55:21Z https://community.sony.es/t5/tablets/display-isn-t-responsible/m-p/3358487#M6818 <P>a lot of thanks</P> Wed, 10 Jun 2015 13:18:31 GMT https://community.sony.es/t5/tablets/display-isn-t-responsible/m-p/3358487#M6818 AleksEy173 2015-06-10T13:18:31Z