We are so sorry to hear about your S8 phone not turning on.  As someone who is always on my phone, I understand how important having a working phone at all times can be.  Let’s get it powered back on.  Here are the steps to perform a soft reset and hard reset:

http://spr.ly/6600E5nE0

http://spr.ly/6602E5nE2

Does this help?

SeanC_VZW