I built a comp for a friend using a GA-MA785GM-US2H board. Just loaded the drivers from the Gigabyte disk and it ran with no problems. Did not update the drivers from Gigabyte. Nor did I update the Bios. My friend is still tickled to death with the comp. He's running XP 32-bit with 4 gigs of GSkill 1066 memory and an Athlon II X2 260 cpu, all of which was on sale at Newegg. He wanted cheap. And it all runs great, so far. Did you try to update the drivers or the bios from the Gigabyte web site? The memory is set to auto and is unganged.