Sprint Galaxy S2 Epic 4G Touch

[AC Question]

Hello my phone shows battery is charged, i had the rebooting problem with it and i just turned it off took battery out let it sit a couple of hours put it back together and now phone wont turn on but the blue led is lit up when i turn power button on, nothing on screen nor sound. Sprint tech said its USB port but my battery wouldnt charge ifit was that, I dont think they just want me to update and i can not afford it right now is it possible its power button? something i can fix on my own?
Please help

 

[B. Diddy]

Welcome to Android Central! Maybe the battery is failing. Take it out, place it flat on a table, and try to spin it. If it spins freely, it's bulging in the middle, and is definitely failing. But even if it doesn't spin, it's worth trying a new battery.