Cant get passed opening page tried restart!rebot

Try holding the power button and the volume up button same time when hear a vibrate realise them both

Book Won't Open

Your book won't open on your Kindle (5th Generation), or there's an error when you try to open a book.
Before you perform these steps, make sure that your Kindle is connected to a wireless network. To learn more, go to Connect to Wi-Fi.
There may have been an error with downloading the book. Remove the title from your device, restart your device, and then download the book again.

1. From Home, select the book or content to be deleted and press the left side of the 5-way controller.
2. Select Remove from Device.
3. From the Home screen, press the Menu button and select Settings.
4. Press the Menu button again and select Restart.
5. After your device restarts, navigate to your Archived Items, and download the book again

Try a reboot/reset
Hold the start button for about 10 seconds.
Wait 10 seconds then restart as normal.
It will take longer to start up than is usual, but only this time and should start as normal after that.
If that doesn't fix it then you may have to search the Kindle help pages.

Beginner guide to Android How to setup your phone or tablet

How to Reset Samsung Galaxy Tab to Factory Settings Galaxy Tab Forum FAQ...

When you long-press the power button on Android, this usually causes a forced shutdown.

A hard reset is when you reset your tablet to a state where there is nothing on the tablet except for the default apps and the operating system.

try this
http://geek4biz.blogspot.com/2014/01/unlock-mitraveler-or-other-tablets.html

Is there any particular reason to format the tablet?

you need to go too the main site apple.com when the site got loaded click on suport then apple id, then click on forgotten apple id password then read the instruction. if you got a pass for the lock screen and forgot pass, then you have to restart your ipad.

http://www.androidtablets.net/forum/android-tablet-usage-tips-tricks/6280-forgot-your-unlock-pattern.html

Go to www.zeepad.net click on the picture of your device. Download the device driver, loading program, instructions and the firmware for your zeepad. Reinstall the firmware this will update and bring your unit to
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did you try the reset button ,it a very small hole that you can stick a pencil en ,try that if not go in and do a complete reset to factory .This is done by going under privacy