ubuysa
The BSOD Doctor
I would absolutely recommend a reinstall in this case because you can't be certain that the new motherboard is an exact replacement. Windows configures itself at install time for the hardware platform it finds itself going on, and the drivers (chipset in particular) are specific to the motherboard. Unless PCS can guarantee that the new motherboard is exactly the same I would definitely reinstall. TBH I would reinstall anyway just to be sure. The objective is a stable system and if you have to spend a day or two to be certain of getting a stable system then it's time well spent IMO.