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Page 31 / 44 Scroll up to view Page 26 - 30
Troubleshooting
27
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 39
.
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 38
.
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 and that it is solid amber while
the router boots up (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 90 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 1 Gbps device, verify that the port’s light is green. If the port is 10/100
Mbps, the light will be amber.
c.
The Internet port is connected and its light is lit.
4.
Verify that the WPS button light on the front panel is blinking when you push it.
Page 32 / 44
Troubleshooting
28
If the correct behavior does not occur, check for a remedy from the following table.
Table 3.
Troubleshooting the router’s LED behavior
LED Behavior
Recommended Action
Power light is off.
See
“Connecting Your N750 Wireless Gigabit Router” on page 11
), 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 90 seconds
and then turns green. If the light does not turn green, the router has a problem.
If the Power light is still amber 2 minutes 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 38
.
If the error persists, you might have a hardware problem and should contact
technical support.
Power light blinks green
continuously.
The router firmware is corrupted.
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
Page 33 / 44
Troubleshooting
29
For more information on WPS functionality and advanced features, see the online
Reference
Manual.
Troubleshooting Login Problems
If you are unable to log in to the N750 wireless gigabit router, check the following:
•
If you are using an Ethernet-connected computer, check the Ethernet connection between the
computer and the router as described in the previous section.
•
Make sure that you are using the correct login information. The factory default login name is
admin
, and the password is
password
. Make sure that Caps Lock is off when you enter this
information.
•
Typically, your computer’s address should be in the range of 192.168.1.2 to 192.168.1.254.
Refer to your computer’s documentation for help with finding your computer’s IP address.
Internet light stays
amber.
When the router is turned on, the Internet light turns amber for about 70 seconds
and then turns green. If the light does not turn green, the router has a problem.
If the Internet light is still amber 2 minutes 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 38
.
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 router and
at the computer.
2.
Make sure that power is turned on to the connected computer.
3.
Be sure you are using Ethernet cables like the cable that was supplied with
the N750 wireless gigabit router.
See
“Connecting Your N750 Wireless Gigabit Router” on page 11
for
instructions.
If your computer’s IP address is 169.254.x.x, verify that you have a good
connection from the computer to the router, and then restart your computer.
Table 3.
Troubleshooting the router’s LED behavior (continued)
Page 34 / 44
Troubleshooting
30
•
Make sure that your browser has Java, JavaScript, or ActiveX enabled. If you are using
Internet Explorer, click
Refresh
to be sure that the Java applet is loaded. Try closing the
browser and starting it again.
Checking the Internet Service Connection
If your router is unable to access the Internet, check that the Internet connection is working, and
then check that the N750 wireless gigabit router can get an Internet address.
Check that the Internet connection is working:
1.
Internet connection
. First verify that your cable or ADSL modem has a successful
connection. The cable or ADSL modem status lights indicate if the modem connection is
successful or not. Check your modem documentation, or call your Internet Service Provider
for help with verifying that the modem has a successful connection.
2.
Wireless router Internet light is green
. If your Internet light is solid green, then you have a
good Internet connection, and your wiring is correct.
3.
Wireless router Internet light is solid amber
. If your Internet light is solid amber, then your
N750 wireless gigabit router is attempting to make an Internet connection with the service
provider. The light should turn green within several minutes. If it does not, check the Internet
connection on the modem.
4.
Wireless router Internet light
off
. If the Internet light is off, verify that the Ethernet cable is
securely connected between the cable or ADSL modem, and that both the modem and N750
wireless gigabit router are turned on.
Obtaining an Internet IP Address
If your N750 wireless gigabit router is unable to access the Internet, and your Internet light is
amber, check the N750 wireless gigabit router to see if it is able to get an Internet IP address from
your service provider. Unless you have a static IP address, your N750 wireless gigabit router
automatically requests an IP address from your service provider.
To check the Internet IP address from the browser interface:
1.
Log in to the N750 wireless gigabit router.
2.
Select
Router Status
under Maintenance on the main menu to check that an IP address is
shown for the Internet port. If 0.0.0.0 is shown, your N750 wireless gigabit router has not
obtained an IP address from your service provider.
Page 35 / 44
Troubleshooting
31
If your router is unable to obtain an IP address from the your service provider, the problem might
be one of the following:
•
Your service provider might require a login. Ask your service provider whether they require
PPP over Ethernet (PPPoE) login.
•
The service name, user name, and password might be set incorrectly. See
“Troubleshooting
PPPoE”
.
•
Your service provider might check for your computer’s host name.
Assign the computer host name of your ISP account to the N750 wireless gigabit router in the
Basic Settings screen.
•
Your service provider allows only one Ethernet MAC address to connect to Internet, and
might check for your computer’s MAC address. In this case, do one of the following:
–
Inform your service provider that you have bought a new network device, and ask them to
use the N750 wireless gigabit router’s MAC address.
–
Configure your router to spoof your computer’s MAC address. This can be done in the
Basic Settings screen. Refer to the online help, which you can access from the N750
wireless gigabit router main menu.
Troubleshooting PPPoE
To troubleshoot a PPPoE connection:
1.
Log in to the N750 wireless gigabit router.
2.
Select
Router Status
under Maintenance on the main menu.
3.
Click the
Connection Status
button.
4.
If all the steps indicate OK, then your PPPoE connection is up and working.
5.
If any of the steps indicate Failed, you can attempt to reconnect by clicking
Connect
. The
N750 wireless gigabit router will continue to attempt to connect indefinitely.
If you cannot connect after several minutes, you might be using an incorrect service name,
user name, or password. There also might be a provisioning problem with your ISP.
Unless you connect manually, the N750 wireless gigabit router will not
authenticate using PPPoE until data is transmitted to the network.

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