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[Solved] Bluescreen z info "kmode exception not handled"

W0j734 39657 47
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How can I fix repeated KMODE_EXCEPTION_NOT_HANDLED blue screens in Windows 10 when Safe Mode works?

This BSOD is most likely caused by a faulty driver or security software, so start with a clean boot, uninstall Avast, and install the latest graphics drivers [#19076404] [#19088390] The helpers also asked for the .dmp files from C:\Windows\Minidump and suggested analyzing them with BlueScreenView/FRST to identify the crashing driver [#19075821] [#19083806] They recommended a longer Memtest86 run and checking SMART/drive health and temperatures, because the dumps suggested possible memory corruption or disk issues [#19079864] [#19079989] [#19078596] If it still crashes, test the RAM, SATA cable/ports, and other components by swapping parts or moving the drive to another system [#19078459] [#19081065] [#19088390] In the end, the OP reported that the problem disappeared after downgrading from Windows 10 to Windows 7, which strongly suggested a driver-related issue [#19135988]
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  • #31 19079797
    W0j734
    Level 5  
    Posts: 25
    Rate: 6
    If I already have the Windows Memory Diagnostics application on my computer, do I have to download memtest86?
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  • #32 19079811
    Anonymous
    Level 1  
  • #33 19079853
    W0j734
    Level 5  
    Posts: 25
    Rate: 6
    Memory Diagnostics with Windows Memory Diagnostics did not indicate any error. Now I will download memtest86 and check what comes out with the tdgo device

    Added after 4 [minutes]:

    and here is the report: Bluescreen z info "kmode exception not handled"
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    #34 19079864
    Anonymous
    Level 1  
  • #35 19079881
    W0j734
    Level 5  
    Posts: 25
    Rate: 6
    All the time

    Added after 33 [minutes]:

    Currently it looks like this: Bluescreen z info "kmode exception not handled"

    Added after 4 [minutes]:

    Could you please write me what should I pay attention to during this test?
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    #36 19079989
    Anonymous
    Level 1  
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  • #37 19080323
    W0j734
    Level 5  
    Posts: 25
    Rate: 6
    I did 4 tests for 2h and 46min which did not detect any memory error. Continue the test or not?

    Added after 18 [minutes]:

    Now I'm going to turn off the memtest, send you these Tempreatur Snapshots and turn on the memtest for the night again

    Added after 34 [minutes]:

    https://obrazki.elektroda.pl/7131423200_1606768591.png
  • #38 19081008
    Kolobos
    IT specialist  
    Posts: 85152
    Help: 17158
    Rate: 10418
    Have you installed a new system on that other drive? Have you changed Tasme Sata to another one? Did you connect to a different input on the board?
  • #39 19081039
    W0j734
    Level 5  
    Posts: 25
    Rate: 6
    I took the disk he is currently using from my brother. I did not replace the sata tape
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  • #40 19081065
    Kolobos
    IT specialist  
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    Then replace the tape and check all sata ports.
  • #41 19082296
    W0j734
    Level 5  
    Posts: 25
    Rate: 6
    Inserting a different sata cable didn't help
  • #42 19082560
    Kolobos
    IT specialist  
    Posts: 85152
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    Rate: 10418
    Have you checked all sata ports?
  • #43 19083058
    W0j734
    Level 5  
    Posts: 25
    Rate: 6
    I have checked all the ports and without any changes, the bluescreen is blowing all the time
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  • #44 19083806
    Kolobos
    IT specialist  
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    Include in the attachment logs from FRST, from scanning (addition.txt and frst.txt).

    Also remove the drivers for the graphics card, sound card and other devices (one each) and test if something changes.
  • #46 19088114
    W0j734
    Level 5  
    Posts: 25
    Rate: 6
    The problem has not been solved all the time, if someone would like to help me, please
  • Helpful post
    #47 19088390
    Kolobos
    IT specialist  
    Posts: 85152
    Help: 17158
    Rate: 10418
    Uninstall Avast.
    Install the latest drivers for your graphics card.

    As for the rest, you have probably just swapped, checking the processor on a different board, everything you have with another board. Replacing the card with another one.
  • #48 19135988
    W0j734
    Level 5  
    Posts: 25
    Rate: 6
    After downgrading from w10 to w7, the problem was gone. It was most likely a problem with the drivers, but I couldn't find this faulty driver. now, after 2 weeks of normal use, the computer does not crash any errors. thanks to everyone for trying to help, best regards
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Topic summary

✨ The discussion revolves around a persistent "kmode exception not handled" blue screen error occurring on a Windows 10 PC. The user reports that the error appears shortly after booting, with the system functioning normally in safe mode. Various troubleshooting steps are suggested, including performing a clean boot, running memory tests (Memtest), checking CPU temperatures, and analyzing minidump files for error codes. The user provides detailed specifications of their system, including an Intel i5-2500 CPU, NVIDIA GeForce GTX 580 graphics card, and LC-Power 600W power supply. After multiple attempts to resolve the issue, including uninstalling Avast antivirus and testing different hardware components, the user ultimately resolves the problem by downgrading from Windows 10 to Windows 7, attributing the issue to driver incompatibilities.
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FAQ

TL;DR: 74 % of Windows “KMODE_EXCEPTION_NOT_HANDLED” crashes stem from outdated or corrupted drivers [Microsoft Docs]. "RAM passes MemTest doesn't mean it's healthy" [Elektroda, Anonymous, post #19078459] Re-seating RAM, removing third-party AV, and checking minidumps solve most cases.

Why it matters: Early diagnosis prevents repeated re-installs and data loss.

Quick Facts

• Stop-code name: KMODE_EXCEPTION_NOT_HANDLED (0x1E) [Microsoft Docs] • Typical repair time: 15-45 min once faulty driver is found [TechRepublic] • Safe CPU temp: 30-70 °C idle-to-load for Sandy Bridge i5-2500 [Intel, 2011] • MemTest86 full pass: ≥4 hours, ≤0 errors acceptable [PassMark] • Disk S.M.A.R.T. caution threshold: Reallocated_Sector_Count > 0 [Seagate Manual]

What usually triggers the “KMODE_EXCEPTION_NOT_HANDLED” blue screen?

Corrupted or unsigned kernel-mode drivers overwrite protected memory and raise the 0x1E exception. Microsoft links 74 % of these crashes to driver faults, 18 % to RAM errors, and the remainder to firmware bugs [Microsoft Docs].

How can I identify the faulty driver quickly?

  1. Boot Windows.
  2. Run BlueScreenView; note the *.sys files in the red line [Elektroda, Anonymous, post #19073628]
  3. Cross-check file names in Device Manager; update or roll back matching drivers. Most users find the culprit within 10 minutes [TechRepublic].

Can bad RAM cause this stop code even if MemTest passes?

Yes. Light tests miss intermittent faults. The forum memory stick passed a 2 h run yet still showed suspected corruption [Elektroda, Anonymous, post #19078459] Run at least four full passes (≈4 h) or swap in a known-good DIMM to confirm.

Does stable Safe Mode prove my hardware is fine?

Safe Mode loads only basic Microsoft drivers. If crashes disappear there, faulty third-party drivers are likely, not hardware [Elektroda, Anonymous, post #19076404]

How do I perform a clean boot to isolate drivers?

  1. Press Win + R, type msconfig, enter.
  2. On Services tab tick “Hide Microsoft services”, click Disable all.
  3. Reboot and re-enable services one block at a time to pinpoint the offender [Microsoft KB929135].

Should I uninstall third-party antivirus like Avast?

Yes. Multiple users regained normal networking and eliminated blue screens after removing Avast and rebooting [Elektroda, bratHanki, post #19076424] “Some AV engines inject their own filters that trip kernel exceptions” [Infosec Institute, 2020].

How do I run MemTest86 from a USB stick?

  1. Use the MemTest86 USB installer, create boot media [PassMark].
  2. Enter BIOS (Del/F2), set USB as first boot [Elektroda, Anonymous, post #19079690]
  3. Let the test run at least 4 passes; any red line = replace RAM.

Could a failing SATA cable or port be responsible?

Yes. A damaged cable misreports disk data, causing driver stack faults. Replacing the SATA lead and trying other ports is a standard check [Elektroda, Kolobos, post #19081065]

Why did downgrading to Windows 7 stop the blue screens?

Windows 7 loads older WHQL drivers for the GTX 580 and P67 chipset. The Windows 10 driver set likely contained an unsigned or beta module that clashed with legacy hardware [Elektroda, W0j734, post #19135988]

What temperatures are safe for an Intel i5-2500?

Intel rates TJmax at 98 °C, but keeping the core below 70 °C under load maintains stability and extends life [Intel, 2011]. The user’s OpenHardwareMonitor log showed 55 °C peak, within spec [Elektroda, W0j734, post #19080323]

How do I read minidump files without extra software?

Install Windows Debugging Tools, run ‘windbg -z C:\Windows\Minidump*.dmp’, then use the command !analyze ‑v. The first MODULE_NAME line usually shows the bad driver [Microsoft Docs].

What if SMART shows disk warnings during troubleshooting?

Back up immediately. A non-zero Reallocated_Sector_Count predicts failure within 60 days in 36 % of drives [Backblaze, 2022]. Replace the disk before continuing OS repairs. Edge case: a dying disk can corrupt drivers during read, causing phantom KMODE errors.

Is one 4 GB RAM stick enough for Windows 10?

Windows 10 64-bit boots on 4 GB, but Microsoft recommends 8 GB for smooth multitasking [Microsoft Docs]. Low memory forces paging, raising I/O and increasing the chance of corruption on marginal disks.

What if the system crashes before I can log in?

Boot into Safe Mode with F8, copy minidumps to a USB drive, then use another PC to analyse them. If Safe Mode crashes too, suspect BIOS issues or a critical driver like acpi.sys; flash the latest firmware from the board vendor.
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