IRQL_GT_ZERO_AT_SYSTEM_SERVICE

What is 0x0000004A?

The 0x0000004A error is categorized as a critical-severity Windows operating system issue that can significantly impact your PC's stability. A critical Windows error indicating that a system service was accessed with an IRQL that was too high. When experiencing the IRQL_GT_ZERO_AT_SYSTEM_SERVICE fault, users often report sudden system crashes, unresponsive behavior, or a blue screen of death (BSOD). In most diagnostic scenarios, this problem is directly triggered by underlying hardware or software complications such as incompatible software (antivirus, firewall), bad device driver and hardware error. To permanently resolve the 0x0000004A issue and prevent further system degradation, it is highly recommended to follow our step-by-step troubleshooting guide below, ensuring your Windows operating system components are functioning correctly.

Common Causes

• Incompatible software (antivirus, firewall)
• Bad device driver
• Hardware error

Step-by-Step Fix Guide

• 1
  Start your PC in safe mode and remove recent software

  Applying the first fix (Start your PC in safe mode and remove recent software) addresses the most common root cause of 0x0000004A and restores baseline functionality.

• 2
  Check the

  If the problem persists, proceeding with the remaining steps ensures all edge cases related to windows instability are covered.

• 3
  drivers Restore the system to the previous point

Commands & Diagnostics