I'm not able to switch ON my mobile

[AC Question]

I was factory resetting my mobile.It took very long time still it was resetting. So i removed the battery while it was resetting. Then I fixed up the battery and tried to switch ON the mobile but it never got switched ON. I then removed the battery and left it for some time. I again fixed the battery and switched ON no use ... I then charged the mobile for almost 3 hours no signs of charging.again I tried to switch ON even then its not getting switched ON. I have no idea at all...