We help IT Professionals succeed at work.

NMI Parity Error

ManyErrors asked
Last Modified: 2008-01-09
I get the blue screen error that says "NMI : Parity Check/ Memory Error" Or something of the sort. This only occurs when I'm running certain games. It takes longer to occur in some games and doesn't occur at all in others. It has never occured during normal Windows operating of the computer. I've never modified any of the internal hardware and all peripherals have remained constant except for a wireless USB logitech mouse I've installed.

I own a Dell Inspiron 9400 with...

Windows XP
NVIDIA GeForce Go7900 GS, 256 MB.
Dual Processors, Genuine Intel(R) CPU T2600 @ 2.16GHZ
2.00 GB RAM (2 Modules)
I've read through other solutions though I am having difficulty getting "MemTest" to work. I've burned its ISO file onto disk but it won't boot from it. I've also gave a shot at UBCD though it's beyond me as well.
Watch Question

Gary CaseRetired
Most Valuable Expert 2013
Top Expert 2009

Are you trying MemTest86 (http://www.memtest86.com/ ) or MemTest86+ (http://www.memtest.org/ )?    The latter sometimes works on chipsets that MemTest86 has problems with.   But if you're system isn't even booting from the CD, then you probably didn't create it correctly.

It sounds like you have created a data disk that contains the ISO file.   ==> that's NOT what you have to do.   You have to burn a CD FROM the ISO image.   What burning software are you using?   In Roxio you "burn from disk image file";  in Nero you click on Recorder and select "Burn Image".
Gary CaseRetired
Most Valuable Expert 2013
Top Expert 2009

... you may also be able to resolve the issue without replacing your memory by adjusting the memory timing parameters or voltage in the BIOS.   A SLIGHT increase in the memory voltage may help;  or (if that doesn't do the trick) increasing the CAS latency by one additional wait state may help [note that this will slow down the system a bit].

I had the same error on hp dl320 server. The service replaced the motherboard because memory modules were ok, but memory controller had some problems. They said it has been a known issue on hp servers.
I would run diags on system memory and the video card(bad video memory can cause NMI errors). Restart the system and on the Dell bios screen tap f12, this will bring up a boot options menu there should be an option to boot to a utility partition(diagnostics). If the utility partition is missing you can get to these diagnostics by booting to the driver and utilities cd that shipped with the system(insert cd and choose the cd rom in the F12 boot options menu). In the diagnostics choose custom test now you can test the memory and video card.


I've ran MemTest which reported no errors. I ran the diagnostics from the boot menu and ran all tests under the "Windows Blue Screen" branch except for.....

The System Memory tests and...

SATA Disk S/N=3MHOFZW9-Seek Test
SATA Disk S/N=3MHOFZW9-Read Test
SATA Disk S/N=3MHOFZW9-Verify Test

During the initial blue screen phase of the diagnostic the following tests failed.

Start DST Short Test
DST Short Status Test


I've just ran the Video Memory test.

Error Code 5300:0119
Msg: Detected a failure while writing and reading video memory. Video mode:105h (1024x768x256)
Address A4184h, expected to read FFFFFFFFh, but read FFFBFFFFh instead.

The same happened continuously with the following video modes and resolutions.

107h (1280x1024x256)
111h (640x480x65536)
112h (640x480x17616076)
114h (800x600x65536)
115h (800x600x17616076)
117h (1024x768x65536)
118h (1024x768x17616076)
11Ah (1280x1024x65536)
11Bh (1280x1024x17616076)
Gary CaseRetired
Most Valuable Expert 2013
Top Expert 2009

Definitely points to a video memory problem ==> time to get a new graphics card :-)
Unlock this solution and get a sample of our free trial.
(No credit card required)
If you feel like you want to upgrade to a better graphics card here's a 7900 GTX that will work in the I9400

Gain unlimited access to on-demand training courses with an Experts Exchange subscription.

Get Access
Why Experts Exchange?

Experts Exchange always has the answer, or at the least points me in the correct direction! It is like having another employee that is extremely experienced.

Jim Murphy
Programmer at Smart IT Solutions

When asked, what has been your best career decision?

Deciding to stick with EE.

Mohamed Asif
Technical Department Head

Being involved with EE helped me to grow personally and professionally.

Carl Webster
CTP, Sr Infrastructure Consultant
Empower Your Career
Did You Know?

We've partnered with two important charities to provide clean water and computer science education to those who need it most. READ MORE

Ask ANY Question

Connect with Certified Experts to gain insight and support on specific technology challenges including:

  • Troubleshooting
  • Research
  • Professional Opinions
Unlock the solution to this question.
Thanks for using Experts Exchange.

Please provide your email to receive a sample view!

*This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.


Please enter a first name

Please enter a last name

8+ characters (letters, numbers, and a symbol)

By clicking, you agree to the Terms of Use and Privacy Policy.