Total Reset on Microsoft 1514

How to Total Reset on Microsoft 1514 Surface Pro Tablet?

Make sure you turned off the device.
Use the USB recovery drive. Insert it into the USB port.
Hold down the Volume Down key and quickly press the Power button.
Wait until a logo appears and then release the Volume key.
Now you can choose the language and keyboard layout.
In the new menu select "Troubleshoot".
Next click on "Reset your PC" and "Next".
If you are prompted to enter a recovery key, press "Skip this drive" at the bottom of the screen.
Select your operating system.
Then press "Yes, repartition the drives" and "Next".
Now choose one of the options: "Just remove my files" or "Fully clean the drive".
Tap "Reset" to finish the process.
When the reset is over, you may be asked to clear the TPM. To do this, press F12 or the Volume Up key.
That's all! After these actions, your device data will be deleted.