To reset your Samsung TV, you'll need to go to the settings menu and look for the option that says "Support" or "Self Diagnosis", then select "Reset" from there. You might be asked to enter a PIN, which is usually 0000 if you haven't changed it. Once you've entered the PIN, confirm that you want to reset the TV and it will start the process, which may take a few minutes. Keep in mind that resetting your TV will erase all your saved settings and data, so make sure you've written down any important details like wireless network passwords before you start.