Galaxy S6

[Android Central Question]

My galaxy S6 is stuck on a blue/green screenwith a samsung official message in the top left hand corner and a downloading - do not turn pff targwt in the centre. I have attempted to press up, home andower but nothing happens. What ahould i do next? problem occured when the phone was charging g overnight

 

[B. Diddy]

Welcome to Android Central! See if you can force a shutdown by pressing and holding Power and Vol Down for about 20-30 seconds.