I have a Galaxy note 10.1 Tablet. Last evening it locked

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You will need to factory reset it, but you do it this way.
Turn Off your Samsung Galaxy Note 10.1 device.
- Wait for 10 seconds, Then move to the next step.
- Press and hold Volume Up key + Power key.
- Keep pressing the above keys until the Samsung Logo appears,Then release Power key only.
- When you see Factory reset / System Recovery menu on screen release the Volume Up Key.
- Use Volume Down key to select Wipe Data / Factory Reset option.
- Use Power key to confirm the operation.
- You need to use the Volume Down key again to select "Yes -- delete all user data"
- Use Power key to confirm.
- After performing the hard reset, Select Reboot System Now option, And confirm it using Power key
Let this complete and it will be as new and functioning correctly.
Let me know the results please