When your computer connects to the Internet using the gateway, a number of devices have to work together.
Your computer connects to your gateway via a wireless or wired connection.
Your gateway connects to your Internet Service Provider (ISP) via your cable/phone network.
The first step in solving this problem is to diagnose the cause. There are a number of places where the connection from your computer to the Internet might fail.
Check the indicator lights of your various devices. If one or more of these devices indicate a problem, it's a good indication of where you should focus your troubleshooting efforts.
If you still cannot connect to the internet, manually step through the following procedures.
Verify the wired or wireless connection to your gateway. If your computer cannot communicate with the gateway, it cannot access the Internet.
If the LEDs for your gateway are not responding, verify your gateway is responding. This includes checking the LEDs to verify they are functioning correctly and to verify that the gateway is powered on responding. If the gateway is turned off, or the wireless radio isn't operating, or it has no connection to the Internet (via your cable/DSL modem), your computer won't be able to access the Internet either.
If the LEDs for your gateway are responding, verify your internet connection .
If you use a wired connection between your computer and your gateway, ensure the Ethernet cable is securely connected to your computer's Ethernet port and to a LAN port on the gateway.
Verify that the corresponding LED for the LAN port is lit. Make sure your computer has an IP address in the same subnet as the gateway. If you still cannot get to the Internet, verify your gateway is responding.
If you use a wireless connection between your computer and your gateway, ensure the wireless utility reports a successful connection to your gateway.
Ensure that your computer is connected to your gateway, and not another gateway like a neighbor's gateway. You can use your wireless utility to check the Network name (SSID) of the gateway you're connected to. If it's connected to the wrong gateway, you can use the utility to force your computer to try to connect to your gateway. See the documentation of your wireless adapter for information on how to check which gateway you are connecting to.
Ensure that your computer is close enough to your gateway to receive a signal and that there is nothing interfering with the signal, such as a microwave oven or a concrete wall. If your perform a scan with your wireless utility (typically called a "site survey") and it can't detect your gateway, it may be a signal problem.
Verify your gateway is configured to broadcasts its network name.
Ensure that the wireless utility is using the correct Network name (SSID) and wireless security settings for your gateway.
Settings such as network name, security method (WPA, WEP, etc.), and security keys must all match. If your gateway is using WPA encryption, each wireless card or adapter must support WPA encryption. If you are using a Wireless PC Card, PCI adapter, or USB adapter that does not support WPA encryption, you will not be able to connect to the gateway and will need to use WEP encryption. Please refer to the Configuration section of this User Guide for information on changing the security settings.
Verify the computer permitted to connect to your gateway. If you have MAC filtering enabled on your gateway, you should verify that the MAC address of your wireless adapter is allowed access to the gateway. For example, if you have changed wireless adapters, you will have to add the MAC address of the new wireless adapter to the gateway.
If none of these work, you can try a wired connection between your computer and your gateway by connecting an Ethernet cable between your computer's LAN port and a LAN port on the gateway. (Ensure that the corresponding LAN port LEDs are lit.) If a wired connection works, the problem is almost certainly with your computer's wireless connection to the gateway. You should then try the previous steps again.
If you can verify the connection between your computer and your gateway, it's likely the gateway is not connected to the Internet or is not functioning correctly. You need to verify your gateway's connection to the Internet.
Check that the gateway's LEDs for power, wireless, and Internet are lit.
Start a Web browser. In the location or address line type 192.168.1.1 and press ENTER.
Note: If you have modified your gateway's IP address, enter the new IP address instead of 192.168.1.1.
If the gateway's Web interface appears and you still cannot connect to the Internet, the problem may be with its connection to your cable/DSL modem. Go to Step 3.
If the gateway's Web interface doesn't appear, you should restart your computer.
Your computer should acquire an IP address (such as 192.168.1.5) from the gateway.
Try again to access the gateway configuration pages at 192.168.1.1.
If the gateway configuration pages appear and you still cannot connect to the Internet, the problem may be with its connection to your cable/DSL modem. Verify your gateway's internet connection.
If the gateway configuration pages still do not appear, you need to restart your gateway.
Note: If you press the Reset button for more than five seconds, the gateway will return to its factory default settings.
Wait about 30 seconds for the LEDs on the gateway to stabilize.
Restart your computer.
Try again to access the gateway's Web address at 192.168.1.1
If the gateway configuration pages appear and you still cannot connect to the Internet, the problem may be with its connection to your cable/DSL modem. Verify your gateway's internet connection.
If you still cannot access the gateway, the gateway may need to be restored to the default factory settings.
Note: When you restore to the factory default settings, you will lose all of your gateway's custom settings and will need to set it up again as if you were installing it for the first time. Alternatively, you can restore your settings if you have made a backup of your gateway settings.
With a thin tool, such as a paper clip, press the Reset button on the back of the gateway for 7 seconds.
Wait about 30 seconds for the LEDs on the gateway to stabilize.
Try to access the gateway's Web address at 192.168.1.1
If the gateway's Web interface still doesn't appear after you have restored to the factory default settings, it's possible that the gateway has failed. Please contact U.S. Robotics Customer Support.
In the gateway configuration pages, click General on the Status menu.
Click Refresh to update the page with the most current status information.
Go to the DSL section of the page and verify that the gateway has a WAN IP address (such as 235.42.181.5). This IP address indicates whether the gateway is connected to the cable/DSL modem.
If the gateway doesn't have a WAN IP address, reboot the gateway.
If you still cannot access the Internet, click WAN Setup on the Internet menu and use the page to configure the gateway's Internet connection. (If you have a DSL modem, you may be required to enter the login information your ISP provided.)
Note: If the WAN protocol is static, you will need to make sure the WAN IP address of the gateway is a valid static IP address. A valid static IP address is one that is provided by your ISP or is in the same subnet as the device that is connected to the WAN port of the gateway.
If the gateway still does not have an IP address after repeating this tutorial, the problem may be with the cable/DSL modem or your ISP. Please contact your ISP's Customer Support.