Technical question on motherboard

[Charles Bennett]

On Fri, 2010-01-01 at 08:05 -0500, Jerry Feldman wrote:
> At work I've got 4 systems that are using a Supermicro X7DB8+
> motherboards. 3 of these systems happily are set up with 64GB (16 4GB
> Kingston memory sticks). The 4th system is having trouble recognizing
> the 4GB sticks. When we originally got the memories for the other
> systems, we had to download and flash a BIOS. But, this last system
> still does not work with the 4Gb sticks. When I originally put them in,
> the machine did boot, but hung on udev. Now, I can't even get the system
> to come up in the BIOS. (note that I wear an anti-static strap when
> replacing the memories so zapping the memories should not come into play).
> 
> I've reflashed the BIOS a few times. One possible suggestion I received
> was to change the 1GB PCI memory hole from 256 to 1GB.
> 
> One clue is that I do receive a message: "0251: System CMOS checksum bad
> - Default configuration used". 
> 
> I'm just looking for some suggestions, or some help to carry the system
> to the roof so I can export it to the parking lot.
> 

Have you considered swapping the BIOS battery on this machine?

ccb