I have Supermicro super server 8026B-6RF with 4 times X7550 and 8 times 16GB memory, but i got error code E1 when system boot up, any idea?
The problem may relate to CPU didn't support 4GB memory chip, can you exchange 2GB memory chip memory module and test again? (Since X7500 Nehalem series CPU didn't support 4gb memory chip based RDIMM)