How to Fix KERNEL_MODE_HEAP_CORRUPTION on Windows 10

KERNEL_MODE_HEAP_CORRUPTION is Windows catching a driver corrupting the kernel’s heap — the memory area where drivers allocate and free blocks dynamically. Something wrote past its allocation, freed the same block twice, or used memory after freeing it. Windows spots the inconsistency and crashes rather than let it cascade.

Graphics drivers cause this more than anything else, with bad RAM as the runner-up. The order below reflects that: graphics driver cleanup first, then the other drivers, then memory. If your crashes involve pool headers instead of the heap, our special pool corruption guide covers that sibling stop code.

Why this happens

• Buggy graphics driver: The top cause — a driver corrupting heap allocations under load, especially in games.
• Faulty RAM: Bad memory cells corrupt heap metadata exactly like a driver bug would.
• Antivirus filter drivers: Low-level drivers that intercept I/O and mishandle heap allocations.
• Corrupted system files: Damaged kernel heap-manager components.
• Overclocked GPU or memory: Unstable clocks corrupting data as it’s written.
• Conflicting drivers: Old drivers left behind after hardware swaps, fighting the new ones.

How to fix it

Work through these in order. The graphics driver reinstall (Fix 2) resolves most cases.

Fix 1: Boot into Safe Mode and check the pattern

Establish the basics before changing anything.

1. Boot into Safe Mode (Settings > Update & Security > Recovery > Advanced startup, or interrupt boot three times).
2. Ask: do crashes happen only in games/heavy apps, or also at idle? Load-only crashes point at the GPU driver or heat; idle crashes point at RAM or a system driver.
3. Check Reliability Monitor (search for it in Start) — it logs every crash with timestamps, making patterns visible.
4. If Safe Mode itself crashes, prioritize the memory test in Fix 4 — and note whether the crashes reference the same driver each time, which you can check later against your minidumps.

Fix 2: Clean-reinstall the graphics driver

The single highest-yield fix for this stop code.

1. Download Display Driver Uninstaller (DDU) and the latest stable driver from NVIDIA , AMD , or Intel’s driver detection tool.
2. Disconnect from the internet, boot into Safe Mode, and run DDU (Clean and restart).
3. Install the fresh driver with Clean installation selected.
4. If crashes started after a driver update, install the previous known-good version instead of the latest.
5. Remove any GPU overclocking (MSI Afterburner and similar) — reset to stock clocks during diagnosis, and leave memory overclocks off too until the crashes are resolved.

Fix 3: Update or remove other suspect drivers

If the graphics driver isn’t it, widen the net.

1. In Device Manager, update chipset, storage controller, and network adapter drivers from your laptop maker’s site.
2. Uninstall third-party antivirus with the vendor’s removal tool and test with Windows Security — filter drivers are a known heap-corruption source.
3. Remove virtual-drive tools, disk encryption, and “RAM optimizers.”
4. Check for leftover drivers from removed hardware in Device Manager > View > Show hidden devices and uninstall ghost entries.

Fix 4: Test the RAM thoroughly

Heap corruption from bad memory is indistinguishable from driver corruption in a single dump.

1. Press Win + R, type mdsched.exe, and choose Restart now and check for problems.
2. For a deeper test, run MemTest86 from a bootable USB overnight — it catches errors the built-in diagnostic misses.
3. If errors appear, reseat modules and test sticks individually to isolate the bad one.
4. Replace faulty RAM. Our Memory Management BSOD guide has the full memory-testing walkthrough.

Fix 5: Use Driver Verifier to catch the corruptor

When the crashes are sporadic and no driver stands out, force the issue.

1. Press Win + R, type verifier.exe, and choose Create custom settings.
2. Enable Special pool, Pool tracking, and Force IRQL checking — these target heap corruption specifically.
3. Select Select driver names from a list and tick all non-Microsoft drivers.
4. Restart and use the laptop normally; Verifier will crash the system at the moment of corruption, naming the driver in the dump.
5. After identifying it, boot to Safe Mode, run verifier /reset, remove the bad driver, and reboot. Keep a note of which driver it was — if a future update reinstalls it, you’ll recognize the returning crashes immediately.
6. Don’t leave Verifier enabled longer than needed — it stresses the system by design.

Fix 6: Repair system files and check the disk

Rule out OS-level corruption before concluding it’s hardware.

1. Open an admin Command Prompt.
2. Run sfc /scannow, then DISM /Online /Cleanup-Image /RestoreHealth.
3. Run chkdsk C: /f and schedule at reboot to rule out disk corruption damaging drivers.
4. Microsoft documents these repair tools on the Windows support hub .

Fix 7: Check thermals and consider hardware failure

Heat and failing hardware are the last suspects.

1. Monitor GPU and CPU temperatures under load with HWiNFO — sustained overheating corrupts data in transit.
2. Clean vents with compressed air and verify fans spin up under load.
3. If crashes show visual artifacts (glitches, colored blocks) before the blue screen, the GPU itself is likely failing — back up data and arrange repair.
4. As a final software step, consider a clean Windows install; if heap corruption survives that with clean drivers and good RAM, it’s definitively hardware.

Closing

KERNEL_MODE_HEAP_CORRUPTION is a driver corrupting kernel memory until proven otherwise — and the graphics driver is suspect number one. Clean-reinstall it, clear out filter drivers, test the RAM, and use Driver Verifier when you need a name. The methodical path ends these crashes for good; the random path of updating everything at once just wastes an afternoon and teaches you nothing at all useful either.

Frequently asked questions