Is it possible to access data while a device is on bootloop?
USB DEBUGGING CAN BE TRIGGERED BY PULLING OUT THE BATTERY... 

If you have a built-in battery, You need to force a reboot by holding all the buttons on the device simultaneously for 30 seconds...

Try to remove the battery and replace it,   or force reboot ...

This will or should enable ADB Until boot logo starts to loop .. It will only enable it for enough time to check the settings and then disable it.... This means you can only run one segment of adb commands, So type them out first or just paste the following in CMD with ctrl+v

adb wait-for-device 
adb pull /data