Q&A for How to Reconnect to a Wireless Router

Go to the network center on your computer. You can access a simple version at the bottom right of the screen in Windows. The network name should be on a list of available networks -- click on it and then click "connect." If it's not there, it's either out of range or your PC lacks wireless capability.

Go to settings, then WiFi. Choose your network and input your WiFi passkey. This should reconnect you.

It's possible if something went wrong on that specific computer (or it was deliberately disconnected from the internet). Make sure the computer is not in Airplane Mode and doesn't have the WiFi option turned off.

If you can still read the stock password off of the back of the router, you can reset the router and then reconnect using the stock password. Otherwise, you can call the router's company and request a new password, though you'll likely need the router's serial number.

In most cases, you'll click the airplane icon in the task bar (bottom-right corner of the screen on Windows, top-right corner of the screen on Mac), then click the "Off" button.