The BIOS won't recognize the full 4GB of ram. The BIOS reports only 2GB.
If I install only one stick, it still reports only 2GB. Also, the system won't boot
if I only install one stick in the slot nearest the front of the machine. Do I have
a bad memory slot?

Ram type: CORSAIR TWIN2X4096-6400C5 2x2GB
BIOS: SK22S20T
SystemID: SK22G20-L3TH00-21
S/N: SK22G200R0703F00449

Any help would be greatly appreciated.