When switced on android sits in middle of screen

Try the procedure at the bottom of this web page SOLVED How to Remove Demo from the Zeepad Screen Android Tablet Forum

If there is an options menu go and find the demo there should be one. I think that would be the place. Hope this helped you.

in the middle of the screen

Try this:

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. Go to the option for Factory Data Reset and select it. Scroll down to `the Yes, and then the tablet will erase its memory back to factory settings. Once it has completed, select Reboot Tablet Normally.

Nextbook Android Tablet Hard Reset

screen needs to be replaced

let it sit at room temperature until it thaws out :-D