My iPad will not reboot. What do I do? - Apple - iPad Air 2 Wi-Fi 64GB

To reboot an iPad just press and hold the power button on the top and wait until the power slide menu comes up with a restart option, then click it and be on your way!

Have a nice day!,
Owen

It is very dangerous

Make a new back-up of your ipad, do a factory reset and then restore from the back-up.

The two most common reasons for resetting an iPad to the factory default settings are to prepare the iPad up for a new owner or to overcome a problem with the iPad that simply rebooting the iPad won't solve.

settings -> general -> reset

Rebooting is easy. It is called a hard reboot. Just hold both buttons down until you see a red slider, and then slide it to shut down. It will restart, and you will see the Apple logo.

when you mean reboot, does safari crash and goes back to the main screen?

Try this: Reboot the iPad by holding down on the sleep and home buttons at the same time for about 10-15 seconds until the Apple Logo appears - ignore the red slider if it appears on the screen - let go of the buttons. Let the iPad start up.

If you've got a locked up iPad app or otherwise misbehaving iPad, and want to reboot / reset your iPad, simply hold the sleep and home buttons together until the iPad restarts.
You'll see the shutoff slider come up first, but just keep holding. The screen will go blank and the Apple logo will reappear as the iPad reboots.
Note: this does not reset any data on your iPad. This is just a restart, equivalent to rebooting your computer.

If the iPad will not reboot using the standard "Hard Reboot" (holding the power button and home button until the iPad restarts.) then I would advise restoring the iPad using iTunes which will set it back to factory settings.

Step 1
To reset the Apple iPad you should first locate the power button. This is the button on the top right corner of the iPad when you are holding it like a book, with the narrower sides on the top and bottom.
Step 2
Once you have located this button you will need to simply hold this button down for about 3 seconds or until you see the red slider icon (a red rectangle with a white arrow facing toward the right) come across the top of the screen. The slide area or the area to the right of the button will be labeled Slide to Power Off.
Step 3
If you want to just reboot to iPad you can do that by touching the red slider button and sliding your finger along the slider area toward the right side of your iPad. The iPad will automatically start shutting down, it may take it several seconds depending on the amount of space you are using on your iPad and the programs you had running when you requested the reboot.
Step 4
To turn the iPad back on or restart it after you have shut it down just press the power button (remember that's the button on the top right of the iPad).

If you haven't already done so, you have to download the Pogo application from the iTunes app store. If your problem is with the app itself, the first step would be to reboot your device. To reboot the iPad, hold down the button on the top of the iPad until you get the option to shut down the device. Once shut down, press the same button to power on the iPad. Test the Pogo app to see if it works now.