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#11
No sorry mate that copy if it is an OEM is tied forever to the original board. If it is a retail copy then it can be used again provided it is only used on one machine at a time and then once you have used it for more than say four machines they might just come back at you and ask what is going on.
Now one option is of course to phone Microsoft and explain the original board has gone bad and can you use the OEM copy for the new board. They are usually fairly accommodating but don't try this more than once eh? You will of course need to know the activation code usually on the machine sticker or find it using this first Product Key Number for Windows 7 - Find and See use option 2. If you do contact Microsoft because of that discrepancy in the build they might even say it is not a genuine copy and then we are stuck with getting a new copy which is easier said than done because of finding an OEM - DON'T use EBay mate in any case.
One last option is this Clean Reinstall - Factory OEM Windows 7 - you can use any Windows 7 DVD (say a friends disk) as they have all versions on the disk and you need to use the ei.cfg removal tool to unlock the version you have a valid code for.
I am offline now for a while but post back and let me know what is happening.