ddr2 won't work in this board, if you need your computer for your work why overclock it. run it as standard do you still get the faults. Also when it blue screens have you managed to get the code.
Have you tried putting the memory through its paces with memtest. also are you using the latest chipset drivers.

It could be any number of items causing the problem hardware or software so it may take a bit to find.

Oh ya you said you've just moved have you checked to make sure all the cables are seated correctly.