Yes my tablet is asking for a pin number did not no it had one

Power your device off, and then start it up again and enter the correct pin number. If that doesn't work, you will need to try the option to enter your Gmail account credentials so that you can access your device and change your password.

If that doesn't work, do a Hard Reset by completing the following steps:

Turn off Tablet Try one of these key combos (each Android device uses a slightly different key combo, but these are the most common).

Volume Up + Home + Power Volume Down + Power Home + Power

or

look for a reset button/hole

Release the power button when you see the Android

Choose recovery mode

Choose wipe data/Factory Reset

Choose yes

Tablet will reboot or will ask you to reboot

NOTE: This procedure will delete all apps and data so use it as a last resort.