Cant find the reset button

hold the power button for like a minute it should reboot

First, turn your tablet off. Then, power the tablet back up by holding down the volume (either + or - ) and power buttons simultaneously. Continue holding the volume button until the screen says "Booting tablet in recovery mode." This will give you a picture of an Android. Tap the android, and you will be given a screen with several options. Move between the options with the + and -, and select with the power button.

Are you pressing the power and volume + button together until it goes to reset screen? If this does not work try the volume - button

Press power and volume + buttons together till reset screen comes on! Then reset!

You may have to reset it. With the device turned off, press and hold the volume down button, and then briefly press the power button. - Wait for the screen with the three Android images to appear, and then release the volume down button. - Press volume down to select clear storage, and then press power. - Press volume up to start the factory reset.

Try performing a power reset. There should a power reset button near the charging port. It looks like a tiny hole. While plugged into the charger, use a paperclip to push the button inside this hole for 3-5 seconds. If it turns on, please allow it to charge for 4-6 hours before using it.
Support Troubleshooting Guide

You might have to take it to an apple store.

Either wait for it to die completely and turn it back on or hard boot it (holding down the power button till it shuts off).

nextbook cant pass talkback, wont allow me to enter pass word, how can fix this?????