Hardware Malfunction - NMI Parity Check / Memory Parity Error

So you replaced the memory (and continue to use the new memory) and moved the new memory and existing hard drive to a new box (different motherboard and peripherals) and get the same error.

So it must be the operating system throwing up this error. Try downloading and installing all new drivers for this OS (video, audio, network cards, chipset and so on). ... Thinkpads_User

Have you used memtest86: http://www.memtest86.com/? It has many options for configuring memory tests... definitely there's a bad module, if there's no error detected, try booting the machine taking one stick (or two, up on if it supports an odd number of RAM sticks) and seeing if it gives again the BSOD.

Might be a long shot but have you tried looking for upgraded BIOS firmware and drivers?
I only suggest it because you've already done the heavy lifting and changed motherboard/ram...

I am not sure about the overall fit for System File Checker and this situation, but in addition to drivers (my earlier post), try running (from a command prompt) SFC /SCANNOW. Let it complete and restart.

... Thinkpads_User

@thinkpads_user - It could be the OS, or an application that's causing it.  I'll explore updating drivers for the hardware, but despite it's age, it's up-to-date.  I'll try the SFC, as well.

@cavp76 - I have a copy of Memtest86, and I guess I'll try it.  It doesn't seem to be a memory issue despite the memory error.  I've systematically removed and replaced RAM, and I still get the message.  In fact, I can remove and reseat the RAM, and it will boot up.  Then, maybe a day or two later, it blue screens again.

@phoenixke - I'll try the driver updates, but the BIOS may be tough - it's an older server.

That's different... if you say one or two days and it BSODs again, I'll go for a power supply / energy problem; we're talking about machines older than 10 years, leaky capacitors could be throwing a fit, try replacing the PSU. Is this server behind a UPS?

Running Memtest-86 v3.5 now - no issues through the first 5 tests.

All capacitors look fine in both of the boxes (old and new), and it crashes on both PSUs.  I can see if I have a newer PSU to try.  It is plugged into an older APC Back-UPS Pro 420.  I'll see if swapping that out makes a difference.

Running Memtest-86 v3.5 now - no issues through the first 5 tests.

All capacitors look fine in both of the boxes (old and new), and it crashes on both PSUs.  I can see if I have a newer PSU to try.  It is plugged into an older APC Back-UPS Pro 420.  I'll see if swapping that out makes a difference.

I struggle a little bit that this is a hardware issue. Why? You replaced the memory and changed machines. You would have to have the same hardware error in both machines.

More likely, I think, is an operating system corruption.  ... Thinkpads_User

@thinkpads_user - I'm not ruling a corrupt OS out, or an application causing the error.  I started with hardware troubleshooting because of the nature of the error message: "Harware Malfunction".  But I do see what you're saying - the hard drive is a common denominator.  Event logs don't indicate anything out of the ordinary for this behavior.

Agreed... try smartmontools; it will give you all the information it can extract from the disk about S.M.A.RT. status; usually the examples are enough to get a quick view of the status of the HDD

The server has a RealTek Gigabit ethernet card that does not include Server 2003 as a supported OS, despite it installing drivers for it.  It appeared to install correctly, and has worked normally.  I have disabled it to rule it out as a culprit for this issue.  I will keep the ticket updated.

I think we gave a decent answer here (corrupt OS).  ... Thinkpads_User

I investigated the system requirements of the Realtek Gigabit NIC, and it does not support the currently installed Operating System.

Since removing the incompatible NIC, the system has remained up and functional, with no more blue screens.