https://community.sony.com.mk/t5/xperia-archive/xperia-j/m-p/3426964#M507537 <P>Hi @vangiov</P><P>I suggest you to first <A href="http://talk.sonymobile.com/t5/FAQ/Backup-amp-Transfer/m-p/407253#U407253" target="_blank">run a backup of the device information</A>. Try performing a system repair using <A href="http://support.sonymobile.com/us/tools/pc-companion/" target="_blank" rel="nofollow noopener noreferrer">PC Companion</A> or <A href="http://support.sonymobile.com/gb/tools/bridge-for-mac/" target="_blank" rel="nofollow noopener noreferrer">Bridge for MAC</A>. 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 80% battery. 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.</P> Wed, 30 Sep 2015 18:35:38 GMT xavinux 2015-09-30T18:35:38Z https://community.sony.com.mk/t5/xperia-archive/xperia-j/m-p/3426963#M507536 <P>sudden black screen.&nbsp;</P> Wed, 30 Sep 2015 18:22:24 GMT https://community.sony.com.mk/t5/xperia-archive/xperia-j/m-p/3426963#M507536 vangiov 2015-09-30T18:22:24Z https://community.sony.com.mk/t5/xperia-archive/xperia-j/m-p/3426964#M507537 <P>Hi @vangiov</P><P>I suggest you to first <A href="http://talk.sonymobile.com/t5/FAQ/Backup-amp-Transfer/m-p/407253#U407253" target="_blank">run a backup of the device information</A>. Try performing a system repair using <A href="http://support.sonymobile.com/us/tools/pc-companion/" target="_blank" rel="nofollow noopener noreferrer">PC Companion</A> or <A href="http://support.sonymobile.com/gb/tools/bridge-for-mac/" target="_blank" rel="nofollow noopener noreferrer">Bridge for MAC</A>. 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 80% battery. 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.</P> Wed, 30 Sep 2015 18:35:38 GMT https://community.sony.com.mk/t5/xperia-archive/xperia-j/m-p/3426964#M507537 xavinux 2015-09-30T18:35:38Z