You will definitely need to rebuild Windows (if you haven't already done so).
The jumpers for memory configuration mentioned by PoemBoy are also worth lookig at - in fact check all jumpers against your mobo handbook.
Also, I'm sure you've tried booting without your extra devices attached? yes? And the old HDD is set as Slave, yes? Or if your mobo has SATA disk controller don't expect yur old HDD to work unless you have IDE socketing. etc.
Suspishio
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You need to Install clean windows on new board. Windows doesnt load with previous mainboard drivers on new one.
thunderstorm98
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