Where i can buy sleeping tablets in the UK? - Tablets & eReaders

Onn Tablets are a Walmart Special brand sourced in China at the lowest price point for maximum profit. It is for good reason that Apple iPad is the brand leader in tablets.

Take it back, it is faulty.

Although Sleep Mode does cause some battery drain, it should last days if not opened. If it is plugged in, it should remain at 100% ALL the time. It inbuilt charging regulation is broken. Get a refund and buy a brand name tablet, Samsing, Acer or iPad.

hi Pasquale.
this link might help you out.
Android Tablets Power Off and Sleep Options dummies
or this one.
how to get tablet out of sleep mode Google Search

Case for Kindle fire HD7,Special Kindle Cover and Ultra Slim Lightweight Smart-shell Cover with Auto Wake Sleep for Amazon Kindle Fire HD 7 4th Generation. Chornic Case for Kindle fire HD7 Special Kindle Cover and Ultra Slim...

Go into your settings and take it out of sleep or auto shut down mode.press the helpful button

Android Tablets Power Off and Sleep Options

Reset the tablet

This is the sleep mode intended to conserve battery. To change the setting, start from your tablet's home screen and follow these steps:

Settings > Display > Sleep > choose time
Support Troubleshooting Guide

http://www.homeandgarden.co.uk/ZooGue_Case_Prodigy_for_Apple_iPad_Mini__1438127.html

format it and reinstall all the driver cds...