If you change the mobo HAL will require a repair install (assuming you have XP). And you're screwed since your copy of XP is an OEM and is locked to your now dead mobo. Microsoft uses a "point system" where evertime you change a piece of hardware, you get points against you in relation to what you change. When you go over the limit on points within a few months of time, you have to re-install. Good luck.