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Page 86 / 103 Scroll up to view Page 81 - 85
Appendix A – Troubleshooting
D-Link DSL-2750U User Manual
86
Access Control
To access the
Access Control
windows, click the
Access Control
button in the
Management
directory.
Passwords
This window allows you to change the password on the Router. When
you are finished, click the
Save/Apply
button.
Page 87 / 103
Appendix A – Troubleshooting
D-Link DSL-2750U User Manual
87
Update Software
To access the
Tools -
Update Software
window, click the
Update Software
button in the
Management
directory.
This window allows you to update the Router’s software.
Reboot
To access this window, click the
Reboot
button in the
Management
directory.
To save your settings and reboot the system, click the
Reboot
button.
Page 88 / 103
Appendix A – Troubleshooting
D-Link DSL-2750U User Manual
88
Troubleshooting
This chapter provides solutions to problems that might occur during the installation and operation of the DSL-2750U. Read the following
descriptions if you are having problems. (The examples below are illustrated in Windows® XP. If you have a different operating system, the
screenshots on your computer will look similar to the following examples.)
1.
How do I configure my DSL-2750U Router without the CD-ROM?
Connect your PC to the Router using an Ethernet cable.
Open a web browser and enter the address
The default username is ‘admin’ and the default password is ‘admin’.
If you have changed the password and cannot remember it, you will need to reset the Router to the factory default setting (see question 2),
which will set the password back to ‘admin’.
Note:
Please refer to the next section “Networking Basics” to check your PC’s IP configuration if you can’t see the login windows.
2.
How do I reset my Router to the factory default settings?
Ensure the Router is powered on.
Press and hold the reset button on the back of the device for approximately 10 seconds.
This process should take around 30~60 seconds.
3.
What can I do if my Router is not working correctly?
There are a few quick steps you can take to try and resolve any issues:
Follow the directions in Question 2 to reset the Router.
Check that all the cables are firmly connected at both ends.
Check the LEDs on the front of the Router. The Power indicator should be on, the Status indicator should flash, and the DSL and LAN
Page 89 / 103
Appendix A – Troubleshooting
D-Link DSL-2750U User Manual
89
indicators should be on as well.
Please ensure that the settings in the Web-based configuration manager, e.g. ISP username and password, are the same as the settings
that have been provided by your ISP.
4.
Why can’t I get an Internet connection?
For ADSL ISP users, please contact your ISP to make sure the service has been enabled/connected by your ISP and that your ISP username and
password are correct.
5.
What can I do if my router can’t be detected by running installation CD?
Ensure the Router is powered on.
Check that all the cables are firmly connected at both ends and all LEDs work correctly.
Ensure only one network interface card on your PC is activated.
Click on
Start
>
Control Panel
>
Security Center
to disable the setting of
Firewall
.
Note:
There might be a potential security issue if you disable the setting of Firewall on your PC. Please remember to turn it back on once you have finished
the whole installation procedure and can surf on Internet without any problem.
Page 90 / 103
Appendix B - Networking Basics
D-Link DSL-2750U User Manual
90
Networking Basics
Check Your IP Address
After you install your new D-Link adapter, by default, the TCP/IP settings should be set to obtain an IP address from a DHCP server (i.e. wireless
router) automatically. To verify your IP address, please follow the steps below.
Click on
Start
>
Run
. In the run box type
cmd
and click on the
OK
.
At the prompt, type
ipconfig
and press
Enter
.
This will display the IP address, subnet mask, and the default
gateway of your adapter.
If the address is 0.0.0.0, check your adapter installation, security
settings, and the settings on your router. Some firewall software
programs may block a DHCP request on newly installed adapters.
If you are connecting to a wireless network at a hotspot (e.g. hotel,
coffee shop, airport), please contact an employee or administrator
to verify their wireless network settings.

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