why wont my phone turn on

A

AC Question

I have a Samsung S6 Edge, i recently updated it, a few days later it just died, I know it had at least 60% battery. it would not switch back on. I soft reset it, but half hour later it died again but with blue flashing lights. I could not soft or even hard reset it. not recognising the charger or when plugged into laptop. I bought a new battery but still will not switch on al all. never dropped it or anything. HELP!!