I put a Biostar MOBO in the system with a new AMD 6400+ X2 processor and all is fine but the devise manager tells me it needs the driver for the coprocessor. I do have a Sata/IDE card controlling a 2nd DVD rom. It does read it in the 'my computer' section of windows Vista 64 bit .Not in the BIOS though. I have the HDD as Master and a DVD as a slave. then the 2nd DVD as a master on the SATA card. What gives.