8. Reset the factory default.
If you mess up your settings and can’t get them working right, then restore the router back to the way it was the day you bought it. Click the Tools tab and then the System button. Then click the Restore button on that page. If you have locked yourself out of your router, you can do a hardware reset. There’s a pinhole at the back (or sometimes the bottom) of most routers with the word RESET next to it. Find a paperclip, straighten an end, push it into the hole, and hold it for 10 to 20 seconds. When you release it, the router will restart and be reset to the factory default. Don’t forget to go back in and reconfigure it the way you want and also download any firmware updates. See Figure 9.
Figure 9 If you get yourself into trouble, you can always reset the router to its factory settings