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Reset the ZyXEL P 870HN 51b

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Setup Router Staff
Last Updated: | Reading Time: 3 minutes

This guide shows you how to reset your ZyXEL P 870HN 51b router to factory default settings. A router reset is a much bigger deal than a router reboot. A reboot happens every time a router loses power. Resetting a router erases all settings from it and returns it to factory defaults.

Warning: Proceed with caution; resetting your router can be a major headache. The following settings in your router will be changed:

  • The router's login and password are reset to factory defaults.
  • All WiFi information such as network name, password, and authentication method are erased.
  • Your ISP username and password will be reset, and you may have to contact your ISP.
  • Any firewall settings, parental controls, and port forwards that you have configured will be removed.

Resetting your router should be considered the last step. You should be sure that you have tried to at least recover your router password using our Router Password Finder before resorting to a router reset.

Other ZyXEL P 870HN 51b Guides

This is the reset router guide for the ZyXEL P 870HN 51b. We also have the following guides for the same router:

Recover Password in ZyXEL P 870HN 51b

Before you resort to doing a full router reset, you may want to try running our Router Password Finder first.

Router Password Finder is designed from the ground up to help you recover your forgotten router username and password, which can save you a lot of time.

Router Password Finder - Automatically Recover Lost or Forgotten Router Passwords

Do not do a full router reset until after you have tried every other option to log in to your router.

Reset the ZyXEL P 870HN 51b

You can usually find a small reset button on either the back or the bottom of a router. Look for something that looks like this:

Router Reset Button

Reset buttons are usually tiny. Yours may look slightly different than this. You may need a paper clip to push the reset button.

Watch the lights on the front of your router and hold the reset button down for about 10 seconds. The lights on the front of the router should do something different when the reset happens. Keep holding the button as long as you want, it will not hurt anything to hold it down too long.

Just don't forget that this will totally reset your ZyXEL P 870HN 51b router.

This last step should only be taken if you have tried everything else, such as using our Router Password Finder software, which can recover lost or forgotten router passwords.

Login to the ZyXEL P 870HN 51b

After you are finished resetting your router, you need to login in using the original factory username and password. Just follow our P 870HN 51b Login Guide to find all of the information that you need.

Change Your Password

Do not forget to change your router's default password when you log back into it. It's a very bad idea to leave your router's password set to the factory default. Our Choosing a Strong Password guide can help you pick a strong password for your router.

Tip: After creating this new password, we highly recommend writing this down on a post-it note and attaching it to the bottom of your router for future reference.

Other ZyXEL P 870HN 51b Guides

This isn't our only ZyXEL P 870HN 51b guide. We also have the following guides for this router.

This is the reset router guide for the ZyXEL P 870HN 51b. We also have the following guides for the same router: