When you reset your gateway to its factory settings, remember:
The factory SSID and network encryption key will be restored.
If you have a home network, you must re-configure your D-Link 2750B Wireless DSL Gateway to match the previous settings that were assigned to all the other devices on your wireless network. Otherwise, no other network devices will be recognized.
To restore your D-link 2750B to its factory settings:
Open your Web browser and enter http://192.168.1.1 in the Address field
Click the Systems tab.
Enter your user name and password and click Continue. Your default user name is admin if you didn't change it when you configured your network.
From the sub-menu, click Maintenance.
From the sub-menu, click Restore Factory Settings. Your D-Link 2750B Wireless DSL Gateway will reboot. If you are connected wirelessly, your connection will be lost. If you are connected with an Ethernet cable, you may be prompted to log back in using the factory settings.
In the event you cannot access the gateway’s internal interface, perform the following steps:
Using a paperclip, press in and hold the Reset button for 30 seconds.
After 30 seconds, release the Reset button and turn the power off to the D-Link 2750-B.