To turn your tablet on, press and hold the Power button.
If this does not help, take the following measures to check your tablet:
1. Check to ensure that the tablet is properly charged. If not, plug in and ensure that the charging indication light and charging symbol are on.
2. Ensure the tablet is free from debris, water and is not damaged.
3. Try and angle your press on the button on the case slightly, to ensure that you are clicking the button.
4. Consider contacting the manufacturer of the tablet to receive further guidance.