Critical Operating Systems ✓ Solution Verified by Community (0+ upvotes)

Error Code 0x00000009 — Windows 11

Bug Check 0x00000009: IRQL_NOT_GREATER_OR_EQUAL — The IRQL was not greater than or equal to the required level.

65% úspěšnost
👥 0+ uživatelů ověřilo
📅 Aktualizováno: 2026-08-12
⏱️ 45 min čtení
Oprava založena na komunitních zprávách a expertní analýze. Naposledy ověřeno: 2026-08-12 · Jak ověřujeme opravy
Error Code0x00000009
Affected SystemWindows 11 (Microsoft)
DifficultyCritical
Estimated Time45 min
Requires Admin Rights⚠️ Yes
Requires Reboot🔄 Yes

Postup řešení

  1. 1 Boot into Safe Mode as described earlier. If the error doesn't occur in Safe Mode, a third-party driver is likely the culprit.
  2. 2 In Safe Mode, open Device Manager and uninstall recently installed drivers. Right-click the device and select 'Uninstall device'. Restart your PC. Windows will reinstall the default driver, which might be more stable.
  3. 3 Run SFC and DISM: Open Command Prompt as admin and run 'sfc /scannow' and 'DISM /Online /Cleanup-Image /RestoreHealth'. This repairs system files that might be causing the IRQL issue.
  4. 4 Check for Windows updates and install them. Microsoft often releases fixes for driver-related bugs.
  5. 5 If the error persists, test your RAM: Press Windows key + R, type 'mdsched.exe', and press Enter. Choose 'Restart now and check for problems'. Windows will run a memory test. Faulty RAM can cause IRQL errors.

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