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. Be aware that this will erase all data on the tablet.