If you forget your lock sequence and your Backup PIN, you’ll have to perform a hard reset to gain access to your tablet.
Performing a hard reset deletes all of your user data, which includes pictures, videos, and music saved to your internal memory. Please make sure to back up your information prior to performing a hard reset.
 and Volume Down key
 and Volume Down key  on the right side of the tablet at the same time.
 on the right side of the tablet at the same time.
 to highlight Factory data reset, then
press the Power/Lock key
 to highlight Factory data reset, then
press the Power/Lock key  .
.
Highlight Continue reboot to simply restart your tablet without performing a hard reset.
 to highlight Yes or No (Exit), then press the Power/Lock key
 to highlight Yes or No (Exit), then press the Power/Lock key  to continue.
 to continue.
If you perform a hard reset, all user applications, user data, and DRM licenses will be deleted. Please remember to backup any important data before performing a hard reset.