Specifications

Troubleshooting and FAQs
Cox Business Internet Gateway Admin Guide 87
8. With the power off, simultaneously press and hold down the Command (Apple),
Option, P, and R keys on your keyboard. Keeping those keys pressed down, power
on your Macintosh but do not release these keys until you hear the Apple chime at
least three times, then release the keys and let the computer restart.
9. When your computer fully reboots, repeat steps 1 through 7 to verify that all TCP/IP
settings are correct. If your computer continues to be without a Hardware Address,
contact your authorized Apple dealer or Apple technical support center for further
assistance.
How do I renew the IP address on my PC?
If your PC cannot access the Internet after the gateway is online, it is possible that your PC did
not renew its IP address. Follow the appropriate instructions in this section for your operating
system to renew the IP address on your PC.
Renew the IP Address on Windows 7 Systems
1. Click the Windows Start button.
2. Type cmd in the Search box. The cmd window displays.
3. Type ipconfig/renew and press Enter to renew the IP address of the computer.
Renew the IP Address on Windows XP Systems
1. Click Start, and then click Run. The Run window opens.
2. Type cmd in the Open field and click OK. A window with a command prompt
displays.
3. Type ipconfig/release at the C:/ prompt and press Enter. The system releases the
IP address.
4. Type ipconfig/renew at the C:/ prompt and press Enter. The system displays a
new IP address.
5. Click the X in the upper-right corner of the window to close the Command Prompt
window. You have completed this procedure.
Note: If you cannot access the Internet, contact your service provider for further
assistance.
Renew the IP Address on Macintosh Systems
1. Close all open programs.
2. Open your Preferences folder.
3. Drag the TCP/IP Preferences file to the Trash.
4. Close all open windows and empty the Trash.
5. Restart your computer.
6. As your computer starts, simultaneously press and hold down the Command
(Apple), Option, P, and R keys on your keyboard. Keeping those keys pressed
down, power on your Macintosh, but do not release these keys until you hear the
Apple chime at least three times. Release the keys and allow the computer to
restart.