First, if the wireless router had been working fine, confirm there are no warning lights (typically red) that may indicate a hardware or connection problem. Try unplugging the power for 10 seconds and restoring the power. You may need to wait for 15-30 seconds while the router boots up. If this fails to correct the problem, it may be the router is broken, a connection problem or it is not set up properly.
As each router operates differently and has it's own interface, features and options, you will need to review the related guide (or search on the Internet for an on-line manual).
The most common way to access the router is via a computer connected to the router (physically via Ethernet cable), and using a browser with the address of the router. A URL address would look similar to http://192.168.10.1, but again, you'll need to check your specific router.
Once connected via the browser, you'll also need the router username password. If you forgot it, some routers list this on the label affixed to the router. If the default fails, you may need to reset the router. Typically a small reset button or whole where to insert a paper clip is on the bottom or back. Unlike a power-reset, this will erase all settings too.
Once you are in, now you can access various security and access settings. For wireless problems, check the following items:
- The wireless option is on.
The wireless connection is encrypted. There are three standards WEP, WPA, and WPA2. WEP is better than nothing, but WPA or WPA2 are more secure and recommended). Some older computers/laptops might no be compatible with WPA or WPA2, so you may need to use the standard supported by your wireless equipment.
- For expert users, you can limit the access to specific MAC addresses for even better security. Review your router manual for settings and confirmation that if used, the MAC address matches your computers that you plan to connect.