My sons friend changed his password and everytime I go to reset it it just turns off. How do I reset?

• First, switch 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.