If it is your computer, use the built-in recovery/reset options from the sign-in screen or recovery environment
On Windows, select Power > Restart while holding Shift, then choose Troubleshoot > Reset this PC
On Windows, use Advanced startup from the recovery screen to access Reset this PC
On Windows, if available, use a password reset disk or another administrator account
On Windows, use installation media or a recovery drive to start the reset process
On macOS, restart into Recovery Mode and use Disk Utility or Reinstall macOS
On ChromeOS, use Powerwash from the sign-in screen or recovery mode
If the device is managed by an organization, contact the administrator
If you do not own the device or do not have permission, do not attempt to bypass the password
Back up any accessible files before resetting if possible
After reset, set up a new password and enable account recovery options