I am having exactly this problem.  When trying to post I get one long beep repeated over and over.  When I took it back to the place I bought it they tried it with PC800 (since they did not have PC1066) and since that worked, they concluded the memory was bad.  So, I RMA'ed the memory with Kingston, but if you are correct, it will be just as bad with the new ram.  If so, I guess I have to try and get them to swap the MB.
Bummer.
			
			Bummer.
Originally posted by: jbond04
Everyone also may have heard of people who have been having POST problems with the Asus P4T533-C, PC1066 RDRAM, and the P4B processors. Right now, no one knows really what causes the problem, but I am relieved to report that I have experienced nothing abnormal from my system. As far as we can tell, the problem is not caused by the manufacturer of the RAM (both Kingston and Samsung have been in culprit systems), and it is not limited to any specific processor frequency (2.26, 2.4, and 2.53 are all affected alike). The only thing that we can conclude is that the problem most likely lies in the motherboard.
				
		
			