I have a BD7-Raid mobo and I bought some 512mb PC2700 Samsung DDR ram (TCB3). My BD7-R won't post. Neither will a Gigabyte GA-8irx P4 or a DFI AK-76 T-Bird mobo. I don't know if it's the mobos or bad ram or just incompatility. All 3 systems run fine with other ram. I have 2 sticks of the Samsung and neither will work on these 3 mobos. Help !!