NMI: Parity Check/ Memory Parity Error -- System crash

Discussion in 'Dell' started by Flash Gordon, Dec 8, 2006.

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  1. dierk017

    dierk017 Newbie

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    Hi Guys,
    I am a student at a laptop University and i work at the helpdesk. We've had several computers start to show up with this issue and no clue as to why its occurring. We have IBM/Lenovo R60 with 1.8 core duo processor and the ATI Mobility x1400. I'm not convinced that whats occurring is a driver related issue because i have had it occurring on one machine switch the hard drive to a identical machine and no issues. we swap the hard drive from one machine to another without any driver change or BIOS. Both are running the same BIOS version. from reading on several sites and this forum that its something related a device on a PCI bus. Ive seen several reports of people installing a new card on a pci bus and the error occurs then they remove the card and nothing happens. if anyones figured something out besides a driver or BIOS issue help would be much appreciated.
     
  2. martin79

    martin79 Newbie

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    Hi all,

    I've been suffering with the NMI parity errors for some time now. I'm running an XPS M1710, with the following system specs:

    CPU: Core 2 Duo T7600
    MOBO: MXG061
    BIOS: A07
    RAM: 2GB DDR2 (333MHz)
    Graphics: Nvidia Geforce go 7900 gs

    My system orginally shipped with XP, which initially had run fine with the stock wireless, having had issues with the wireless dropping out, i upgraded to a Gigabyte GN-WI01GT, which solved my wireless issues, at this point all was still fine. I decided to upgrade to Vista a little while afterwards, it was about a month after this when i saw my first NMI screen.

    I reported it to Dell via the online chat system, who asked me to run the system diags, which i did (no errors found). At this point the headphone jack failed, so i had the motherboard replaced (found it better to call support, as they didn't seem to be able to understand it was broken when communicating online). So with my new motherboard in i ran for a day and the NMI appeared again.

    At this point I formatted my drive and installed XP, on doing this i still got the NMI error, but less frequently. I contacted Dell once again, who decided to replace the Graphics card, the day after the card was replaced the error appeared again. Two days later another engineer arrived with a new motherboard and fresh RAM, after a discussion, we decided to replace only the RAM. I'd been running for a little over a week with no sign of an error, but you guessed it, it popped up again. I installed the fangui utility and set the fans to run high at a low temp, I still got the NMI with this, so that ruled out a heat issue, never mind the fact i'd managed to leave it on in my backpack for 30mins or so, it was positively cooking, but with no error.

    This time I contacted Dell again, for the first time I was asked what order did i install the drivers, as usual I installed Chipset, Graphics, Network then the rest followed by windows updates. I was told by the tech, that the NSS (Notebook System Software) must be installed before anything else

    With this I popped in My vista disk having downloaded fresh drivers from the dell site, making sure i installed the NSS first. One thing i noted, i'd had issues with the graphics drivers previously and it had taken some playing around to get it working, i had no such problems this time.

    I'm by no means out of the woods as far as the NMI goes, but i thought it was time I posted having had this snippet of info from Dell regarding the NSS.

    How many people are aware this needs installing first (or even needs installing at all)?
     
  3. syousef

    syousef Notebook Enthusiast

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    There's a lot of talk about this problem being a heat issue.

    Since I replaced graphics and wireless drivers I have been able to run for days and have not seen another NMI error. It's been months since my last post.

    - I did not have any hardware replaced.
    - I did not do a fresh XP install.

    There may be more than one cause to this problem.
     
  4. Primeh

    Primeh Notebook Enthusiast

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    Hi there guys , just to let you know about the experience i had with this problem..... heres the last email i sent to dell ...

    Hi Michael ,

    First can i say thank you for arranging the replacement of my motherboard and the graphics card so quickly, everything went fine for 2 days until...the Blue Screen of Death came up again ! I couldnt believe it lol, so i have done some extensive research on the internet about it, and it seems that im not the only one who is suffering from these problems.

    The problem originates from a Blue screen with the following error :

    Hardware Malfunction
    Call your hardware vendor for support
    NMI: Parity check / Memory parity error
    *The system has halted*

    After this i have to reset the machine by holding down the power button , when the machine is reset i get another Blue Screen but this time with another error, i actually get a stop code , it can be 1 of 2 stop codes

    Stop 0x00000050 - Microsoft gives several reasons that can cause this.

    1) Faulty Hardware- I have had 2 new graphics cards from yourselves and a new motherboard, i have also reseated the memory modules and swopped their postions around, unfortunately nothing seems to help.
    2) Antivirus software - I have uninstalled the software i use and this has not worked either
    3) Corrupted NTFS Volume - I have run CHSDSK /r to test and repair errors , but none where detected.
    4) Incorrect Video Card Drivers - I have booted into Safe mode and uninstalled all the graphics drivers, then booted back into normal windows , im guessing im using a internal graphics card? Then installed several drivers:

    http://www.nvidia.com/object/winxp_2k_mobile_84.63_2.html
    The Drivers from the dell site , i cant link to it , but its called NR126106.EXE
    http://www.laptopvideo2go.com/forum/index.php?showtopic=15175

    None of them have worked so currently i have totally uninstalled all drivers.

    The other Stop i get is Stop 0x0000007E - Microsoft ask you to :

    1) Make sure u have enough disc space, i have over 10 gig free at the minute
    2) Update ur Bios - This was done by the guy i spoke to for 3 hours the other night in India , using the remote connection
    3) Update your video drivers - I did this already ^^ see above
    4) Remove unsigned and 3rd party drivers, i have done this using a programme called Driver Cleaner Pro

    After much goggling i found 3 very helpful thread on the internet

    http://www.dellcommunity.com/suppor...video&message.id=154014&c=us&l=en&cs=19&s=dhs
    http://forum.notebookreview.com/showthread.php?t=92036
    http://www.dellcommunity.com/suppor...message.id=4502&view=by_date_ascending&page=1

    As you can see one of these threads has nearly 60 pages hehe , so its a well documented problem, i have done everything i can think of , installed new wireless drivers for my wireless card , reformatted my hard drive, swopped RAM around, uninstalled and reinstalled several different types of drivers, had 2 new graphics cards and a new motherboard. Im fresh out of ideas , i dont really want to have anything else replaced as looking at the threads in the forums nothing seems to have sorted out the problems for people. The only thing that does seem to work is getting a new machine. Obviously this is a last option for yourselves as i understand the cost involved , however i did pay a significant amount of money for a top notch gaming laptop and atm im only able to view webpages due to my lack of active graphics card. The last thing i want is for a guy to come and replace my hard drive or Ram only to get my hopes up for a few hours until the machine goes haywire again. And I dont really want to spend another 3 hours on the phone to a guy who is remotely trying to fix a problem that from my research doesnt seem to be able to be fixed in all circumstances . I understand that its not your fault at all and the service that you personally have provided has been fantastic , however im starting to pull my hair out now and would like a new machine so i can get back to normal

    Thanks alot for reading and my apologises for the essay!

    Dan


    the guy from dell was VERY helpful and they have offered to replace my system, unfortunately they couldnt get it replaced for 30days so i have been offered a full refund. I understand that the prob should be cureable, but im very impressed with the service they have given me. I was running a M1710 512mb geforce 7900gtx by the way. I 100000% dont believe that the temp was to blame in my particular circumstance , the machine could lock up after a few seconds when it had been off all night.

    Im gonna order a new M1730 tonight , and make sure i get 3 years warranty !

    Good luck in fixing the prob you guys have , and thanks alot for the information that has been posted on here, it undoubtled helped me to get a fast refund.
     
  5. n0xlf

    n0xlf Notebook Enthusiast

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    Has anyone had any luck with getting this resolved out of warranty (or getting a cheap 7900 from Dell)? Mine just expired and this problem just popped up...E1705 with a 7900GS here...
     
  6. mtri

    mtri Newbie

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    just a followup to my last post where i thought i had the problem solved by pointing a small fan at the keyboard. it still works but if i play any newer more graphic intensive games such as any FPS released within the last few months the computer will still crash with the error. i guess the fan doesnt keep it cool enough with the newer games.

    world of warcraft still works with the computer but prolly because its not as cpu/gpu intensive as the newer stuff.

    bottom line im getting a new computer and never buying a dell. luckily this computer was a company machine.
     
  7. fdsa

    fdsa Newbie

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    I have recently received the NMI BSOD for the first time. Here are my specs:

    Lenovo T60p (w/ FireGL 5200)
    IBM wireless (Atheros)
    2 x 1GB Kingston RAM
    Windows XP SP2
    Ubuntu Fiesty release

    I've been using my T60p about 12 - 16 hours per day, 7 days a week, for about a year without a single BSOD. This is probably the most stable piece of hardware I've ever used. As an electrical engineer (microprocessor designer), I use my laptop with both Linux and Windows, booting on two separate HDDs. I stress my laptop's CPU, wireless, and graphics card. Given that I haven't had a single crash in over a year, I'm confident that my hardware is rock solid. Recently, I purchase a new hardrive, 7K200, and decided to do a clean install of Vista Business on it, just for kicks. I downloaded all the necessary drivers from Lenovo. Within the first two days, I received my first NMI parity BSOD. The data seems to point to the fact that this NMI issue is linked to a particular configuration of drivers, settings, and/or OS and NOT the hardware. This is substantiated by the past 50 pages of posts where people have swapped out every component and even received a new computer and have seen the same issue. For the few cases where the number of BSODs have decreased with a hardware swap, I suspect that it's the subtle change in the software or configuration that made the difference, not the hardware change.

    The parity error has nothing to do with RAM, as the evidence shows. Most people are not using ECC RAM so there is no parity to speak of. The error message is most likely referring to signaling issues on the PCIe bus, where the wifi card sits.

    It may be possible that this is related to heat in some cases as higher temps (GPU will contribute) will degrade PCI bus timing margins. However I've driven my laptop CPU and GPU to very high temps with high network activity without any issues. The one time I had an issue in Vista was when I was trying to watch a video on YouTube. Others have pointed out crashes when watching videos online as well as playing WoW. The common thread here is that online streaming videos and WoW (online game) stress not only the graphics card but the wireless card as well. It's most likely the activity of the wireless card (PCIe bus) coupled with a specific set of drivers and settings that causes this instability. Driver settings, configurations, and network activity play a large role in bus timing margins.

    There does not seem to be any correlation to any specific brand. There does seem to be a correlation of failures with the Atheros chipset. I hope this is helpful.
     
  8. wandering_s0ul

    wandering_s0ul Newbie

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    Hardware Malfunction
    Call your hardware vendor for support
    NMI: Parity check / Memory parity error
    *The system has halted*


    Ok. So i have had this problem for about 5 months and basically quit gaming because of it lol. (only happens during games.)

    So I decided i wanted to play some of my games again.

    I went to the f12 boot options and ran the diagnostics. In the second battery of tests there is an option for testing Video Memory, and my card failed miserably.

    So I called dell yesteray, and in about 1 hour of talk time was able to have them schedule a local tech to come and install a New 7900gs.

    I will let you know what happens with the new card.
     
  9. rhinok

    rhinok Newbie

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    FYI - Dell replaced both my RAM and Video Card. The problem is gone. I didn't have to argue with anybody, btw. I did my due diligence by running the diagnostics ahead of time. After that, I used the Dell online chat (much better than calling, IMO) and told them I was having this issue. I informed them that I had run all of the recommended diagnostics and that I felt sure this was a heat-related issue since my I would start to see massive graphical artifacts in games before the crashes. The whole chat took about 10 minutes and 2 days later I had a tech come to my house to install the new parts. BTW, the tech said I had one of the cleanest systems (in regards to dust) he'd every seen (I regularly blew the fans out with compressed air), so it wasn't due to my system being clogged with dust.
     
  10. dierk017

    dierk017 Newbie

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    Hi again,
    I've been doing some testing over the past few weeks and have seen that it correlates to the PCI-E bus and the wireless card of my computer. I've been able to test on two different machines one that gets them and one that doesnt with just switching the hard drives and no software changes and identical machines. After no NMI errors for several weeks in the good machine we decide to switch just the wireless card from the good machine to the NMI machine and no NMI errors for a week during testing.
    We switch the card back and within a day the error has occurred. Even after a complete reload with Windows Vista the error still occurred with the bad card in place. we are going to test in the next couple by switching the wireless card back and testing the bad card on the good machine.
    the one frustrating thing is that there is no way to test the card really even with the factory diagnostic. Ive explained it to my technician and he believes me but has not been able to find something wrong with the test. Does anyone know of a wireless card test utility. maybe this helps someone or will help the rest of figure this out.
     
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