ntoskrnl.exe - Analyze and How to Fix Errors

★★★★☆ Verified File (27.08.2026)

⚠️ Important Notice: Meta Description: Discover information about ntoskrnl.exe, the core operating system kernel for Windows. Essential for system stability and functionality. Manually replacing system libraries can brick future Windows updates or cause critical system failures.

Architecture:	other	️ Not detected
Antivirus scan	✅ Clean	No viruses detected.
Digital signature	🟡 Not signed	Signature missing. The file may have been modified.
Hash Integrity	ℹ️ Unverified	File Hash protection is missing.
File size	1.6 Mb.	1670151 bytes.

Hashes:

MD5: b6fcc4fffd2e3eec13032fbf10ffc1fc
SHA-1: fe4c642472bea28b649ef2320ca5fda4c1b8139a
SHA-256: c02d7d5d92cceb5e907755a3c8c12888f226b99403ff067e210f56f252d83b57
SHA-512: 5221aaef69942cd6dcba70acd9e5794c3e257f7cf9ee3096525a5f71c72936ae328de104ab9b4458b9231fa6748480203590aeae2b37f7846cb2c61545e276d7

How to fix errors ntoskrnl.exe without downloading files.

How to Fix Ntoskrnl.exe Errors

The ntoskrnl.exe (Windows Boot Kernel) error usually happens due to corrupted system files, outdated drivers, or hardware issues like faulty RAM. You do not need to download anything to fix it.

Follow these built-in Windows solutions step-by-step.

1. Run SFC and DISM Repairs

Windows has built-in tools to find and fix corrupted system files automatically.

Press Windows Key + X and select Terminal (Admin) or Command Prompt (Admin).
Type sfc /scannow and press Enter.
Wait for the scan to finish.
Type DISM /Online /Cleanup-Image /RestoreHealth and press Enter.
Restart your computer.

2. Check Your Hard Drive for Errors

A damaged file system can cause kernel crashes.

Open Command Prompt (Admin) again.
Type chkdsk c: /f /r and press Enter.
Type Y to schedule the scan for the next restart.
Restart your computer and let the scan complete.

3. Test Your RAM (Memory)

Faulty RAM is a primary cause of ntoskrnl.exe blue screens.

Press Windows Key + R, type mdsched.exe, and press Enter.
Click Restart now and check for problems.
Your PC will restart and run the Windows Memory Diagnostic tool.
Check the results after Windows boots back up.

4. Undo Recent Driver Changes

If the error started after updating a device driver, roll it back.

Right-click the Start menu and select Device Manager.
Expand the category of the recently updated device (usually Graphics or Network adapters).
Right-click the device and choose Properties.
Go to the Driver tab.
Click Roll Back Driver if the option is available.

5. Disable Overclocking

Aggressive hardware tuning causes system instability.

Restart your computer and enter your BIOS/UEFI (usually by pressing F2, F12, or Del during boot).
Locate the frequency and voltage settings (often called AI Tweaker, Overclocking, or Extreme Tweaker).
Reset the values to Default or turn off XMP/EXPO profiles.
Save changes and exit.

To narrow down the root cause, please let me know:

What is the exact error message or Blue Screen (BSOD) stop code?
Did this error start after a specific Windows update or hardware change?
Does the crash happen randomly, or only during gaming/heavy loads?

📊 Diagnostics Tool: Verify Your `ntoskrnl.exe` File

Worried that the file on your PC has been modified by malware? Drop it into the form below. Our script will verify its file size, cryptographic hash (MD5/SHA-1), and check for a valid Microsoft digital signature.

Other versions:
️ ntoskrnl.exe 10.0.19041.5965 64-bit (x64) | ️ ntoskrnl.exe 10.0.19041.6456 32-bit (x86)