I am using G41CEL combo which can support ddr2 and ddr3 ram, when i put in my Team Elite 4gb 1333 ram, it can boot for several days, after that, it won't post, then i placed back the ddr2 2gb ram, it posted. I am sure that the ram doesn't have any problem with it because i tried it in other pc. Could be the problem came from the processor which can only supports up to FSB 1066? By the way, i am using core 2 duo E7500.