The Netgear WNDR3700 model router offers you a Web-based console application, so you can perform a reboot on the router. When you change router configurations, the router does a "soft reboot," meaning the operating system reboots. A "hard reboot" means you must remove power from the router and reboot it after the router powers off for several seconds. Hard reboots are typically used when you troubleshoot networking problems or when you need to reset the admin password.
Click the "Start" button and open your preferred Web browser. Navigate to "192.168.1.1" in the opened Web browser.
Type "admin" in the opened login window and use "password" in the "Password" text box. These values are the default values for a Netgear router. If you changed the password, you must type the changed admin password instead. Click "OK" to open the main admin window.
Make no changes to the router's set-up, but click the "Apply" button. The router does a soft reboot without changing any of the configurations.
Remove the power cord from the back of the router, if the soft reboot does not fix the issue. Leave the power cable out of the connection for approximately 10 seconds, and then reconnect the power cable to boot up the router.