KN8 SLI & Memory problem

Hi,

I have just built a new system with the following

KN8 SLI MBO
WD Raptor HDD
AMD 64 3800 SKT 939
NVIDIA 7950GT PCI E
2GB CORSAIR DDR400

I couldnt get windows to install as I kept getting a BSOD or it would freeze. Messed about with the RAM and it worked but only with 1GB inserted into DIMM2.

DUAL Mode doesnt work either. I have tried different RAM (Corsair DDR400 but 512MB) but get the same problems.

Also updated the BIOS to the latest one.

It seems to me that there may be a problem with the MBO. But Im no expert.

Any help or advice would be appreciated.

Thanks