|Yeah, if it's the actual BIOS screen telling you 4GB, then the chipset drivers probably won't help. |
I'm not seeing anything out there about ASUS BIOS upgrades ignoring RAM, so at least this looks like a rare issue. Looking at the manual, there's a button you're supposed to press when you install RAM on the MB itself. Have you tried hitting that button?
OtheHill: Asus tends to be an enthusiast brand
Tell me about it. The last Asus board I had had a BIOS bug that prevented the board from booting out of the factory. What happened is the board set the default RAM voltage to 1.2V, instead of something sane like 1.5V. The official solution was to remove the chip and manually write the updated BIOS onto it.
Thankfully the workaround people came up with did not require an EPROM burner. It involved buying a stick of the most off-market RAM you could get your hands on, and use that to boot into the BIOS. From there, you could set the voltage levels to 1.5V, swap in the real RAM, and flash the BIOS though the supplied interface. The hardest part was getting that initial boot, as the system would only come up 40% to 60% of the time.
ASUS also suggested the board was meant for tech professionals, and that's fair; there should be a professional involved somewhere when writing a BIOS, and apparently there wasn't one on ASUS' end.
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