why my divice not succsiful start up

[AC Question]

i am using kyocera model E6782 android 5.1 lollipop

 

[rcrc001]

Need additional details. What exactly did you do, why you are doing it, etc.?

 

[B. Diddy]

Welcome to Android Central! Also, what do you mean by an unsuccessful startup? Is it freezing on the bootscreen, or is the screen remaining dark while you hear sounds, or does nothing happen at all?