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The label on the bottom of the wireless router identifies the number of each LAN port (see “Router Label” on page 7). Troubleshooting N600 Wireless Dual Band Router WNDR3400 Setup Manual Make sure that the network settings of the computer are correct: 1. Verify that your LAN-connected computers are configured to obtain an IP address automatically through DHCP. For help with this, see the documentation for your computer or “Related Documents” on page 43. 2. Verify whether the MAC address is needed. Some cable modem services require you to use the MAC address of the computer registered on the account. If this is the case, in the Router MAC Address section of the Basic Settings screen, select Use this Computer’s MAC Address. To save your settings, click Apply. Restart the network in the correct sequence. Check the router status lights to verify correct router operation: If the Power light does not turn solid green within 2 minutes after you turn the router on, reset the router according to the instructions in “Restoring the Default Password and Configuration Settings” on page 42. Checking Basic Router Functions After you turn on power to the router, check that the following sequence of events has occurred: 1. When power is first applied, verify that the Power light is on (see “Front Panel” on page 3 for an illustration). 2. Verify that the Power light turns amber within a few seconds, indicating that the self-test procedure is running. 3. After approximately 20 seconds, verify that: a. The color of the Power light changes to green. b. The LAN port lights are lit for any local ports that are connected. If a port’s light is lit, a link has been established to the connected device. If a LAN port is connected to a 100 Mbps device, verify that the port’s light is green. If the port is 10 Mbps, the light will be amber. c. The Internet port is connected and its light is lit. 4. If you have enabled WPS security, verify that the dome light stops blinking and turns off (unless you have configured the dome light to stay on). Troubleshooting N600 Wireless Dual Band Router WNDR3400 Setup Manual If the correct behavior does not occur, check for a remedy from the following table. Table 2. Troubleshooting the router’s LED behavior LED Behavior Recommended Action Power light is off. See “Connecting Your Wireless Router” on page 13), check the following: • Make sure that the power cord is properly connected to your router and that the power adapter is properly connected to a functioning power outlet. • Check that you are using the power adapter supplied by NETGEAR for this product. If the error persists, you have a hardware problem and should contact technical support. Power light stays amber. When the router is turned on, the Power light turns amber for about 20 seconds and then turns green. If the light does not turn green, the router has a problem. If the Power light is still amber 1 minute after turning on power to the router: 1. Turn the power off and back on to see if the router recovers. 2. Clear the router’s configuration to factory defaults. This will set the router’s IP address to 192.168.1.1. This procedure is explained in “Restoring the Default Password and Configuration Settings” on page 42. If the error persists, you might have a hardware problem and should contact technical support. Power light blinks green The router firmware is corrupted. slowly and continuously. To restore your firmware: 1. Make sure that your PC is connected to your router and the router is powered on. 2. Insert the Resource CD that came with your router into your PC. The CD automatically starts and detects the language you are using on your PC. Select a different language option, if you prefer. If the CD does not automatically start, browse the CD and double-click on . 3. Click Supporting Software, then Netgear Firmware Recovery Utility, and follow the prompts for the recovery process. 4. After firmware recovery is complete, follow the prompts to restore your configuration Troubleshooting N600 Wireless Dual Band Router WNDR3400 Setup Manual Table 2. Troubleshooting the router’s LED behavior (continued) Internet light stays amber. When the router is turned on, the Internet light turns amber for about 20 seconds and then turns green. If the light does not turn green, the router has a problem. If the Internet light is still amber 1 minute after turning on power to the router: 1. The Internet is not accessible. Confirm that you have the correct internet setting. 2. Clear the router’s configuration to factory defaults. This will set the router’s IP address to 192.168.1.1. This procedure is explained in “Restoring the Default Password and Configuration Settings” on page 42. 3. Turn the power off and back on to see if the router recovers. Internet or LAN port lights are off. If either the LAN or Internet lights do not light when the Ethernet connection is made, check the following: 1. Make sure that the Ethernet cable connections are secure at the ...