Obtain Your Computer's MAC Address

• 1). Open your "Start" menu and click "Run." If you don't see it, press and hold the "Windows" key on your keyboard, then press "R."
  
  
• 2). Type in "cmd" and then press "Enter" to open the command prompt.
  
  
• 3). Type "ipconfig/all" and press "Enter." Write down the MAC address listed; it will be labeled "Physical address" and have 12 digits.
  
  

Configure the Xbox 360 with an Alternative MAC Address

• 1). Go to "My Xbox" in your console and select the "System Settings" panel.
  
  
• 2). Select "Network Settings," then "Configure Network."
  
  
• 3). Select the "Additional Settings" tab and open "Advanced Settings."
  
  
• 4). Select "Alternate MAC Address" and enter your computer's MAC address. When you've finished, select "Done."
  
  
• 5). Select "Done" again and then press "B" on your controller. Choose to test your connection to see if the connectivity issue has been resolved.