Getting NMI Parity Check error on shutdown

Posted on 2005-04-19
Last Modified: 2012-05-05
Hello, I'm using Win XP Pro OS on Compaq Deskpro PIII with about 256 meg ram.  When I do shutdown through WinXP, it looks like it is shutting down okay and then at the very end I get the following message:

*** Hardware Malfunction

Call your hardware vendor for support

NMI Parity check / memory parity error

*** The system has halted and will have to restart.

What is this related to?  I'm not exactly sure.  The computer then get's hung and I have to basically unplug it to turn it all the way off.  It then boots up fine so it only happens on shutdown.  
Question by:jasonbeaird
    LVL 32

    Accepted Solution

    This is almost certainly a sign of a bad RAM module.  I'd try changing them out for some new ones.

    Another possibility is a bad motherboard but this is really rare in my experience.

    Author Comment

    Also, I saw an error recently when uninstalling a music creation software program that was related to my soundcard and said the driver was not correct.  Could it have something to do with that?
    LVL 14

    Assisted Solution

    Memory is the usual cause but other hardware malfunctions, corrupt or incompatible drivers, wrong BIOS versions can also be causes.
    LVL 2

    Expert Comment

    Well the driver problem is easy to rule out.  Simply do a system restore to a point before you uninstalled the program and if the problem goes away that's it.  It the proble persists, I would agree that it's a RAM problem.
    LVL 14

    Assisted Solution

    Yes its possible. A bad driver can corrupt RAM and lead the system to believe that the RAM is bad. I suggest a restore back to an original state or a reinstall of windows to get rid of this problem.

    To check RAm use Memtest from and check if it goes OK. Let it run for at least 3-5 passes.


    Assisted Solution

    Some times, the dirty ram modules can´t comunicate perfectly, try clean with a pen eraser over all pins, and put in to see what happend

    Author Comment

    Sorry for the delay in my response.  I wanted to let the tech guy in my office look at this although he wasn't very helpful.  I did try removing each of the RAM cards, one at a time and rebooting.  The message still shows up on both of them.  I put them back.  I looked at the Device Manager and it looks like all my hardware is functioning normally.  Any other ideas on how to stop this error from coming up every time I shut down?

    Author Comment

    problem was never solved because I haven't had time to do these things as I've been moving but thanks for all the tips

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