S6 wont power up

[AC Question]

S6 wont power up. I have the blue LED going bright, then dim, then bright, then dim.
No internet restart procedures are working.
Suggestions?
New battery maybe?

 

[Rukbat]

While the blue light is doing that, the phone is loading files (that's a standard, at least with Samsung). Plug in the charger and leave it overnight. If it still doesn't complete, you may have to reflash the OS (see [Samsung] How to flash Stock ROM via ODIN - it's easy but boring). You'll lose all your installed apps and your data. (Can you do it without losing anything? No.)