I agree with the reformat when swapping mobos too.
Its the ONLY way to BE SURE everything is right.
IMO if you swap mobos without doing a clean install of windows then please, for the love of god dont ever come online and complain that drivers are giving you issues and insist its the mobo/video or whatever hardware makers fault for having poor drivers.
Seriously, there should be a discalimer on every mobo box that says, "if you cant do a clean format and re-install of windows, then what in the world are you doing installing a motherboard!"
"DO NOT call tech support about driver issues for any hardware product until you've done a format/clean install of your OS!"
Im sorry jgigz , dont take it personal, as you can see , people who do this is one of the things that really bother me.
They do a mobo swap without a clean install of windows , then go on every message board and complain when their pc gets a BSOD and blame it on poor drivers.
IMO , those people should just buy a console, because they have no reason to be swapping pc parts.