I get this error when trying to install 2k8 server, ESX 3.5, or when trying to install various versions of linux.  Windows 2003 installed but when it boots it gets this error when starting.

I removed all proc's except for the cpu in socket 1 and that did not solve it, I swapped it for another, changed VRM's.  Nothing.  Pulled out DRAC incase that was causing an issue, but nothing there either.  Flashed to latest BIOS and ESM and the problem still persists.  Looking for next step suggestions.  

Specs:

x4 Xeon 2.0ghz 

16GB Ram

PERC3(no other pci cards installed)

Thanks