boot loop

I have a Tab 2 GT-P5110 - stuck in a boot loop. Very occasionally I can get it up for maybe just long enough to check the odd setting, but not let me do anything meaningful, then it reboots. I have cleared flash using the boot options. I have noticed that when going there it often comes up with...

How can I fix the Bluetooth of my tablet? I own a Toshiba AT300 and it got stuck on "boot loop" because of the Bluetooth turned on. I tried fixing it the hard way by waiting for the home screen to start and swiftly turning the Bluetooth switch off and restarting it again to refresh. But, that...