8RDA+ No POST, Help Please...

[Dartsen]

Bought 8rda+ and XP2100+ from Newegg, paired with one 512MB Kingston HyperX PC2700. The whole system was running OK for 2 month, with the on-board LED showed "FF". Then the system refused to boot, and halt with code "C3" (C3 means " expand CMOS to RAM"). I got it running the next day, before it finally gone.I am sure that my RAM is not the problem, since it works on my other machine, and none of the 3 sticks of RAM works with this motherboard. So I RMA the board, and got a new one. When I put the new one in, same thing happen: The system stuck with "C3" code on the LED. If I remove RAM, it stop at C1, and if I remove the Video card (AIW7500), it still stucks on C3. Could it be the XP2100+? This is my only XP setup, so I can not test the CPU. Does anybody know what is wrong? Any input will be appreciated!

 

[NEVERwinter]

I think C1-C5 could be a problem of any memory on the system, it could be your RAM stick or even L1/L2 cache on the CPU... should try with other CPU or RMA it