1. I'am already replace with new M/B,Riser2,Backplane but the problem is same.
2. I'am using minimum post the problem is same. (using 1 processor, 1 memory, riser 1, riser 2, front panel, psu)
3. change psu,processor,memory the problem is same.
4. clr nvram M/B the problem is same.
5. unplug the front panel for a few minute then try plug in again, power on the server the problem is the same.
Can u help me to fix this problem??