This article covers how to reset the Thomson Alcatel ST780 router back to factory default settings. This is a much bigger deal than a router reboot. Turning a router off and back on again causes a reboot. This is different from a reset because a reset completely erases all settings from the router.
Warning: Since this erases everything you have done to the router, there are some things you need to consider first. The following settings in your router will be changed:
- The router's login and password are reset.
- All WiFi login information and network names are reset.
- All ISP settings will reset to default, and you may have to contact your ISP.
- All parental controls, firewall settings, and port forwards will be removed.
A router reset should be considered the last resort when you cannot log in to your router any other way. 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 Thomson Alcatel ST780 Guides
This is the reset router guide for the Thomson Alcatel ST780. We also have the following guides for the same router:
Recover Password in Thomson Alcatel ST780
Instead of resetting your router back to factory settings, 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 - Lost or Forgotten Router Password Recovery Tool
If you are unable to recover your lost router password, then you may have to proceed with a full router reset.
Reset the Thomson Alcatel ST780
Most of the time you can find a small reset button located on either the back or the bottom of a router. Most reset buttons look like this:

Even though yours may look slightly different, you need to look for a tiny button. Sometimes the button is under a pinhole, and you need a paper clip to push it.
Keep an eye on the lights on the front of your router while holding the reset button down for about 10 seconds. After a few seconds the lights should blink differently. When this happens, the reset is complete. You can hold the button down as long as you like, it will not hurt anything.
Remember, this will totally reset your Thomson Alcatel ST780 router.
Only do this once you have exhausted all other troubleshooting options, such as running our Router Password Finder software, which can recover a lost router password for you.
Login to the Thomson Alcatel ST780
After you are finished resetting your router, you need to login in using the original factory username and password. We have a ST780 Login Guide with all this information ready for you.
Change Your Password
You need to change your router's default password after you log in for the first time. It is a huge security risk to leave your router's password set to the factory default. Our Choosing a Strong Password guide talks about choosing a strong password for your router.
Tip: Write your new password down on a note and tape it to the bottom of your router for future reference.
Other Thomson Alcatel ST780 Guides
If you want additional help with your Thomson Alcatel ST780 be sure to check out some of our other guides.
This is the reset router guide for the Thomson Alcatel ST780. We also have the following guides for the same router: