I have a Dell Precision 210 (2-PIII processors, 600mhz, 4x128MB ECC RAM) Rrunning Windows Server 2003.
Almost every day, it blue screens with the message:
Call you hardware vendor for support
NMI: Parity Check / Memory Parity Error
Memory passes the recommended Windows Memory Diagnostic found here: http://oca.microsoft.com/en/windiag.asp
I've replaced the memory (they are all matching sticks), run the memory tests, and I still get the blue screen.
I've replaced the box (moved drives and memory to a new Precision 210 box), run the memory tests, and I still get the blue screen.