Daniel. I got it.  Thanks Foxley
hi team. i have problem on R415. current, i use opteron 4162EE with bios 2.2.1 (latest for now).And today, i change cpu to 4284. The server can boot normally until come to step before enter windows 2008r2 OS. i saw the screen showing by "Error: Unsupported CPU and motherboard combination. please install opteron 4100 series cpu." and cannot goto any where. Somebody can help me know how to fix them? thankfoxley
Problem on R415 with Opteron 4200 series