Ok this is weird, this is the 3rd Tyan Trinity 400 motherboard that will not accept memory in any slot but the 1st, no matter what i do. 256 is the max. Does anyone have any idea what the hell could cause this? I have tried everything, I have swtiched everything in bios and in windows, I have made sure settings are all the same and the memory is exactly the same...I refuse to beleive that 3 of them could be wrong in a row. Of course this is a Via motherboard....