Samsung Galaxy mega 6.3

[AC Question]

I have a samsung galaxy mega 6.3 ,my phone was running a little slow and i was told i needed to reset it so i hold the power volume up and home key and reset it that way and it came on and worked fine for a day ,i turned it off to charge it and it wont turn on fully ,it doesn't get passed the samsung galaxy on screen and stays frozen on that screen

 

[AlphaTango414]

Try to boot back into recovery (three buttons like before to reset it) and wipe system cache.