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Change Network adapter MAC address on Windows 7

Most of us (atleast those who learned computer networking) grew up learning about the 7 layers of OSI ISO model or the simple 4 layer model. The lowest layer is the physical layer. In this layer all machines are assigned an address called the MAC address (Media Access Control Address) . The MAC Addresses come pre-assigned in the hardware and it is assigned by a standard authority so that the MAC addresses does not collide. Most of us thought we cant change it, but yes we can change the MAC address.

To change Mac Address in Windows 7

• Open Control Panel > Network and Internet > Network and Sharing Center
  Click on Change adapter settings as highlighted in the screenshot above.
• Right click on your network connection (Local Area LAN or Wireless WAN) and click Properties.
  
• On the properties window click Configure.
• On the advance tab, click Network Address and Enter a value (HEX 0-9,A-F) on the right side textbox AAAAAAAAAAAA as shown

  If you cant find this option then your network adapter does not support this property.

• Thats all, To verify goto Command Line and run

  ipconfig /all

  to verify your new Physical Address

  Ethernet adapter Local Area Connection:
  
     Connection-specific DNS Suffix  . :
     Description . . . . . . . . . . . : Realtek RTL8102E/RTL8103E Family PCI-E Fa
  st Ethernet NIC (NDIS 6.20)
     Physical Address. . . . . . . . . : AA-AA-AA-AA-AA-AA
     DHCP Enabled. . . . . . . . . . . : Yes
     Autoconfiguration Enabled . . . . : Yes
     Link-local IPv6 Address . . . . . : fe80::3c77:5693:31a2:28a8%11(Preferred)
  

• Now the MAC Address on Windows 7 would reflect the one you supplied

Just in case you are not able to connect to internet after this procedure

If you are not able to connect to the internet or other devices revert the changes by clicking on the Not Present Value On advance tab . This can be because your Router is MAC filtered or may be there is a collision with one of the other devices on the network.

Try putting your name as MAC Address

If your name just contains letters from A-F (very unlikely), you can put your name as MAC Address, or just try to make one as close as to your name.

0D-16-17-A4-9B-30
Does it look like DigitalPBK ? :D

Screencast of the above steps to change windows 7 LAN mac address