To: ILCUL8R who wrote (74183 ) 2/21/2011 2:33:08 PM From: ILCUL8R Read Replies (1) | Respond to of 110626 How to bypass WGA and put put an XP retail installation on a newer motherboard? Here is the result of transferring XP PRO to an identical Intel motherboard that has a newer BIOS version and, of course, a different MAC address -- without having to go through WGA again. And, thanks to COW and PMS and others who commented on what the process might entail. As you can see from the below, about the only thing different between the old and new motherboards was the MAC address and BIOS version. Older NICs had provision in their drivers for MAC spoofing or cloning. Not so the built-in Ethernet connection and driver for the Intel motherboards I am using. So, I cranked up the hard drive with the XP PRO install and got on the Internet and, voila! , it is running with no complaint on a different and newer motherboard. Life is good!I have 2 machines here and both are almost identical. They each have the same exact Intel chip set, same motherboard type, etc. The only differences between them, as far as WGA is concerned, might be BIOS signature and perhaps the MAC address of their built in Ethernet connection. As far as I know. One motherboard is failing and won't accept more than 1 GB of RAM and becomes erratic after being on for 2+ hours. So, I want to take its hard drive and install it on its sister motherboard here, the one with the same exact chip set, same video adapter, same sound card, same hard drive serial number, etc. The operating system is XP Pro retail upgrade version (not OEM). It would seem to me that I should be able to transfer this hard drive's XP installation to this 2nd machine, intact, without having to re-install XP, get it activated, get updates, get SP3, etc.