My Phone keeps restarting, how can i fix it?

[AC Question]

This evening my phone has started to restart itself, wont even let me turn it off when i touch the screen to turn off it just restarts. A few errors have popped up like UI crash.. Setting has failed.. ect ect and then when i click ok it just restarts again... Its a Samsung S6!
Thanks in advance!

 

[belodion]

You could try reflashing the stock firmware, assuming that so far as you can judge there is no hardware damage that might explain it.