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  1. #1
    ROG Guru: White Belt Array Chapel PC Specs
    Chapel PC Specs
    Laptop (Model)GL502VS-DB71
    MotherboardAsus ROG Maximus Hero IX
    ProcessorIntel i7-7700K
    Memory (part number)TridentZ 16GB DDR4-4000
    Graphics Card #1EVGA GTX 1080 FTW
    MonitorDell S2417DG
    Storage #1Samsung 960 Evo 500Gx2
    Storage #2Samsung 850 Pro 1TB
    CPU CoolerNZXT Kraken X62
    CaseNZXT H440 Purple/White
    Power SupplyEVGA SuperNova P2 1200W
    Keyboard Das Keyboard Model M Brown
    Mouse Logitech G502
    Headset Kingston HyperX Cloud
    OS Windows 10 Pro x64
    Network RouterAsus RT-AC68U

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    page fault in nonpaged area iomap64.sys after latest BIOS

    After my latest BIOS update on my Maximus IX Hero, my computer keeps BSODing with page fault in nonpaged area and the faulting module is iomap64.sys

    It doesn't do it until I actually login to Windows (10) though. If it sits at the login screen indefinitely, it's fine. As soon as I login, the desktop shows briefly then it BSODs and restarts

    1 out of 10 times, it actually boots though.

    Any help as to why this is happening? Right now I'm in an infinite boot loop of BSODs

  2. #2
    Moderator Array Nate152 PC Specs
    Nate152 PC Specs
    MotherboardROG Maximus IX Code
    Processori7-7700k 5.2GHz Delidded
    Memory (part number)16GB G.Skill Trident Z 4025MHz 17-17-17-39-2T
    Graphics Card #1Titan Xp - EKFC waterblock
    Graphics Card #2Titan Xp
    Sound CardROG SupremeFX 2015
    MonitorHP ZR30w
    Storage #1Toshiba VX500 256GB
    CPU CoolerSwiftech Apogee GTZ
    CaseThermaltake Armor+ VH6000
    Power SupplyEVGA Supernova 1600w Titanium
    Keyboard Cyberpower Skorpion K2
    Mouse ROG Chakram Core
    Headset Sennheiser HD6XX / Modmic 5
    Mouse Pad Steelseries QCK Prism XL
    OS Windows 10 Home 64 bit
    Accessory #1 Asus optical drive
    Accessory #2 Koolance ERM-2K3U
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    Hi Chapel

    I'd lay odds it's your ram that's unstable.

    If it was fine before the update, revert to the previous version with the bios flashback feature.

  3. #3
    ROG Guru: Orange Belt Array chevell65 PC Specs
    chevell65 PC Specs
    MotherboardROG Strix Z370-H, ROG Maximus VII Z97
    ProcessorIntel 4790K 4.6GHz, Intel i5 8400, Intel e8600 Wolfdale, Intel Q9650 Yorkfield, Intel E6750 Conroe
    Memory (part number)16GB G.Skill PC3600
    Graphics Card #1GTX 660 OC
    MonitorAsus 23"
    CaseCorsair clear case
    Power SupplyThermaltake
    Keyboard Logitech G15
    Mouse Logitech G9
    OS Windows 10 Pro
    Network RouterDLink DIR-655, Asus AC88
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    This iomap64.sys file is included with the Asus AI Suite, PC doctor, GPU tweak 2, PC probe software although from everything I've read, it appears to be more of a conflict with the GPU drivers. You can probably get rid of the problem by completely uninstalling the AI Suite software or the GPU Tweak 2 software although this appears to be more of a work around rather than a fix for the actual problem. IOMap64 stands for Input Output Map Driver (64-bit)

    What sometimes works to fix this issue "assuming you can occasionally boot into Windows" is to uninstall the GPU drivers completely, shut down drain power and reboot the system then reinstall latest GPU drivers. I had this issue myself after the Creator's update but with no BSOD's, instead I had an error message showing iomap64.sys as the culprit. Reinstalling the NVidia GPU drivers as mentioned fixed it for me.

    You can also try powering down completely, push power button to drain all power and remove power cord, unplug power from the GPU, remove GPU for awhile, reinstall GPU connect power to GPU then reboot the system and allow windows to discover the newly installed GPU.
    Last edited by chevell65; 05-04-2017 at 06:58 PM.

  4. #4
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    Hi, I was having same problem with my pc. Most due IOMap64.sys but some page fault in nonpaged area and system pte misuse too. Since I uninstalled Asus Suite (unfortunately, would like to use it) I had zero problems with BSOD.

  5. #5
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    Quote Originally Posted by cabelo3d View Post
    Hi, I was having same problem with my pc. Most due IOMap64.sys but some page fault in nonpaged area and system pte misuse too. Since I uninstalled Asus Suite (unfortunately, would like to use it) I had zero problems with BSOD.

    I can echo this -- identical problem, identical fix.

  6. #6
    ROG Guru: Orange Belt Array chevell65 PC Specs
    chevell65 PC Specs
    MotherboardROG Strix Z370-H, ROG Maximus VII Z97
    ProcessorIntel 4790K 4.6GHz, Intel i5 8400, Intel e8600 Wolfdale, Intel Q9650 Yorkfield, Intel E6750 Conroe
    Memory (part number)16GB G.Skill PC3600
    Graphics Card #1GTX 660 OC
    MonitorAsus 23"
    CaseCorsair clear case
    Power SupplyThermaltake
    Keyboard Logitech G15
    Mouse Logitech G9
    OS Windows 10 Pro
    Network RouterDLink DIR-655, Asus AC88
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    That isn't really the fix as it's actually a conflict with the NVidia drivers because NVidia changed the driver format.
    As I mentioned earlier, performing a complete uninstall of the NVidia drivers will fix the issue. I've had the same issue as well and that is what fixed it for me and many others.

  7. #7
    Banned Array JustinThyme PC Specs
    JustinThyme PC Specs
    Laptop (Model)G752VY-DH72
    MotherboardRampage VI Extreme
    ProcessorI9 9940X
    Memory (part number)64GB DDR4 8x8 Corsair Dominator Platinum 3800 MHz @ C17
    Graphics Card #1ASUS Strix 2080Ti O11G @ 2.1GHz
    Graphics Card #2ASUS Strix 2080Ti O11G @ 2.1Ghz
    Graphics Card #3ROG Nvlink
    Graphics Card #4Have to feed animals
    Sound CardExternal Audioengine D1 24 bit 192kbps DAC
    MonitorASUS PG348Q @ 100Hz
    Storage #1Intel 905P 480GB U2 flavor
    Storage #2Samsung 850 EVO 1TB X2 in RAID 0, 960 PRO 1TB DIMM.2_1
    CPU CoolerHeatKiller IV PRO and VRM blocks ,Dual D5 PWM serial, 2X 480, 1X 360 RADS
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    Power SupplyCorsair AX 1500i
    Keyboard ASUS Claymore
    Mouse ASUS Spatha, Logitech MX Master
    Headset Sennheiser HD 700
    Mouse Pad ASUS ROG Sheath
    Headset/Speakers Audioengine A5+ with SVS SB-1000 Sub
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    IOMap64.sys is present only in ASUS software and 100% the cause for these problems. Uninstalling ASUS software isn't as much of a work around as it is a fix. I had the same issue long ago with older Nvidia drivers and simply uninstalling AI Suite took care of the issue.

  8. #8
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    Quote Originally Posted by chevell65 View Post
    That isn't really the fix as it's actually a conflict with the NVidia drivers because NVidia changed the driver format.
    As I mentioned earlier, performing a complete uninstall of the NVidia drivers will fix the issue. I've had the same issue as well and that is what fixed it for me and many others.
    Hey Guys, I just rebuilt my machine like 6 times over the past week because of the IOMAP64.sys BSOD and then when I thought I had it figured out, I got the PTE MissUse or whatever it is. I sent in a support ticket and singled out AI Suite and GPU Tweak as having the particular file and those pieces blowing up the machine. I'll keep you posted if they reply with something that's useful.

    @Chevelle65, Will simply not upgrading the NVidia drivers not suffice as it's overwriting the files in place? I'm trying to understand here. Can you INSTALL GPU Tweak and AI Suite, then install NVidia drivers after and it will be stable? or no?

    Thanks, I REALLY want to use the software because those features are so useful, but geez, just crashes the machine upon login and I can't use it all. Forget ever 10 logins, every login.

    THANKS ALL!

  9. #9
    ROG Member Array Oreaba PC Specs
    Oreaba PC Specs
    MotherboardASUS MAXIMUS XI HERO (Wi-Fi)
    ProcessorIntel® Core™ i9-9900K Processor
    Memory (part number)F4-3000C14Q-64GTZR
    Graphics Card #1STRIX GTX 1080
    Graphics Card #2Intel® HD Graphics 630
    Sound CardROG SupremeFX 8-Channel High Definition Audio CODEC S1220
    MonitorSAMSUNG S27D590C
    Storage #1Samsung 960 EVO Series - 500GB NVMe - M.2 Internal SSD
    Storage #22TB WD Gold - 128 MB Cache
    CPU CoolerCryorig H5 Universal CPU Cooler double fans
    CaseCORSAIR Graphite Series™ 600T Mid-Tower Case
    Power SupplyCORSAIR RM Series™ RM1000x
    Keyboard Logitech Wireless Illuminated Keyboard K800
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    OS Windows 10 Pro [64 bit] version 1909
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    Lightbulb Finally a stable Easy solution to this nightmare !!!

    I took some days off to troubleshoot this BSOD of IOMAP64.sys


    **This conflict can give you any or all of the below BSODs:
    -IOMAP64.SYS
    -SYSTEM_PTE_MISUSE
    -MEMORY_MANAGMENT
    -PAGE_FAULT_IN_NON_PAGED_AREA


    It does not have to with:
    -Corsair Link (tested very well)
    -Your display driver (nvidia especially, tested on old and updated drivers version 388)
    -Any windows update (tested on Windows 10 Version 1607 with and without updates-clean)
    -Your bios version (tested with 701, 801, and 906)


    Solution:
    -Uninstall "Aura version 1.04.29" and restart.
    This would solve the problem insha Allah because this utility is the root of the problem in my case.
    If not, which is not expected to happen at all, install a clean copy of windows and do not install Aura at all.


    Some people say it's because of Asus AI suite 3. Yes the file 'IOMAP64.sys" is part of the AI Suite 3, but I had no desire to drop that utility out of my Asus machine!
    So, I came to a solid conclusion that "Asus Aura" interferes somehow with that IOMAP64.sys and that causes this conflict which results in our IOMAP64 nightmare BSOD.
    Aura is a utility that comes with ASUS Motherboard CD to change the RGB LEDs of your motherboard.
    Having known the reason, I prefer to drop this utility off in expense of having a stable PC with AI suite running perfectly.

    **note you can install Aura, set the lightening you want and then uninstall it before installing AI Suite 3.
    You don't need to worry about your lightening preferences being cleared from your motherboard. It won't.
    **you don't need to uninstall any display driver or to boot from UEFI instead of BIOS.

    Be safe
    Be stable

    Enjoy the AI Suite xD

    -Mohammad

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