My son reminded me that Samsung Tech Support had us do the following steps which we were instructed to look for and found on the internet.
He was here to help me and it worked like a charm. Good Luck.
All owners need to do is press the power and volume-down buttons at the same time, and hold both down for 7-8 seconds. Push, hold, and wait. After 7-8 seconds the Galaxy S7 or Galaxy S7 Edge will vibrate, turn off, and reboot. This should resolve most problems.
How to Reboot a Frozen Galaxy S7 or S7 Edge - YouTube