Why is the elitepad not turning on?

Hi, how can I fix Hp Elitepad 1000 G2 that is not turning on, the battery is charging fine and is on full charge, the widows home button keeps flashing in pulse while with small vibrations when I try to turn it on with the power button. I have tried removing the battery and holding the power button for 30 sec then trying to power it on, also all tricks of holding power + volume down nothing happens. My elitepad was working fine but after sometime the problem started I don't know why, I am out of warranty cant return it back for replacement. Any help or suggestion I will greatly appreciate.