My tablet won't turn on! what do I do?

[Aruno]

Hello,um, my tablet was not working correctly so I restarted it but after switching off it's not turning on and it's was up to 80%.
(we can not plug out the battery in this device)

 

[das_stig]

What model of tablet, if an Android, you may need to do a factory reset.

 

[kelix09]

Try to hold the power button within 10 seconds, next time to reboot it

 

[dancer99]

try holding down the power button and the volume down button at the same time!

 

[madi_]

try holding down the power button and the volume down button at the same time!

this worked thank you so much!!