Back up any important data
Charge the tablet to at least 50%
Open the Settings app
Tap System or General management
Tap Reset or Reset options
Tap Factory data reset or Erase all content and settings
Review the warning
Tap Reset, Delete all, or Erase
Enter your PIN, password, or pattern if prompted
Confirm the reset
Wait for the tablet to restart and complete the reset
Set up the tablet again after it restarts