Method 1:
- open cmd and type ipconfig /all
- look under your LAN card for the Physical Address
- open cmd and type getmac /fo list /v
- look for Physical Address
To set the MAC Address:
Method 1:
- open Device Manager
- go to Network Adapters
- open your adapter
- go to Advanced -> Network Address
- set the value to your old MAC address (12 digit, just remove the dashes if you have this format xx-xx-xx...)
Method 2:
- open cmd and type net config workstation
- copy the number between the curly brackets (NetBT_Tcpip_{xxxxx-xxx..} )
- open Registry Editor (type regedit)
- go to HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Class\{4D36E972-E325-11CE-BFC1-08002BE10318}
- search in the next folders (0000, 0001...) for the NetCfgInstanceId key, it should have a value that you found at step 2
- Change the NetworkAddress key to your desired/old MAC Address (If the key is missing, create a new string key)