You do not say what type of password was set and if you have forgotten it or just want to reset from a known password..
If you just want to change your gmail login password
- Go to google.com/accounts on the tablet browser
- Sign in
- "Change Password"
- Go back to the Home Screen on the tablet
- Open the GMail app, clicked on Menu, then Refresh -- you will get a sync
- Wait for a notification to re-enter your password (a triangle with an exclamation point in the tablet notificaiton bar and/or something in the gmail screen)
- Enter the new password
This simple solution sometimes works:
Turn it off.
Turn back on.
When you get the warning triangle in the notification bar, open the notification.
You will then get a login screen.
Input your new password.
Pattern Lock- Incorrectly enter pattern 5 times (4 or more points each time) . Pop up message will appear Click Next and you will be prompted for goole a/c details or security for pattern lock.
tap forgotten pattern and on next screen enter goole account details. Then next screen allows you to choose a new screen lock option.
Locked with PIN or password
_Try Screenlock bypass pro from play store.
The only other solutio
n is a hard reset which is only as a last resort. You need to access Androids Recovery mode. Check your manual. Most devices it is power off then power up holding volume + and power buttons.
Once in this mode use power down button to highlight "wipedata/factory reset option, then use power button to select it.
Vol - button to to scroll and select yes delete all user data option with power button. When device reset select option to reboot now and the device will turn on unlocked but you will have lost your personal data.
Face unlock -
you were asked to provide a pattern or PIN backup when you set it. Just bypass and enter PIN or pattern.