What should I do if my android nextbook keeps powering off? I already tried resetting it and it did not help.

make sure you do this right or you could end up in more trouble.
if you are not sure what to do then dont do this..
Simple video on how to hard reset Nextbook Android Tablet. Power off device, select volume up and then power, hold power for 5-7 seconds and let go without releasing volume up. When u get the android menu scroll down to wipe data navigating with the volume buttons and then to wipe data.20 Aug 2013

Nextbook Android Tablet Hard Reset - YouTube

or read this before you do it..
How do you hard reset Nextbook device

Simple video on how to hard reset Nextbook Android Tablet. Power off device, select volume up and then power, hold power for 5-7 seconds and let go without releasing volume up. When u get the android menu scroll down to wipe data navigating with the volume buttons and then to wipe data.20 Aug 2013

Nextbook Android Tablet Hard Reset - YouTube

https://www.youtube.com/watch?v=TM-Ir-stVL8 https://www.google.co.uk/webhp?sourceid=chrome-instant&ion=1&espv=2&ie=UTF-8#q=How+can+I+do+a+factory+reset+on+my+nextbook+7

Simple video on how to hard reset Nextbook Android Tablet. Power off device, select volume up and then power, hold power for 5-7 seconds and let go without releasing volume up. When u get the android menu scroll down to wipe datanavigating with the volume buttons and then to wipe data

Try a factory reset

Nextbook Android Tablet Hard Reset

or

Nextbook Factory Reset Reboot

Try a reset. Grab a paperclip, look for a tiny hole - probably on the back, straighten the paperclip and gently press it into the hole. It woks for me on my Hudl!!!

You could download a JB rom for your nextbook 8 and flash it using live suit or do a factory reset by turning it off then hold down the vol up button then hold the power at the same time until you get recovery appear then you can do a factory reset.

Yes update cheers

Can you hold down the power button and volume button and reboot your system. Hope this helps

I don't know if this is available on that model. Give it a try. Press and hold the power button until you get the menu with the option to power it off. Press and hold your finger on the option to power it off for a few seconds. Hopefully you get an option to reboot the tablet into safe mode. This mode will disable all third party apps on the tablet. See if it freezes up. If it doesn't one of the apps is causing it to hang. This will at least tell you if the tablet itself is bad or if it is a problem with an app.