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Bug Check 0x4A: IRQL_GT_ZERO_AT_SYSTEM_SERVICE

The IRQL_GT_ZERO_AT_SYSTEM_SERVICE bug check has a value of 0x0000004A. This indicates that a thread is returning to user mode from a system call when its IRQL is still above PASSIVE_LEVEL.

Important Info If You Have Received a STOP Code

bsod

If you received a blue screen error, or stop code, the computer has shut down abruptly to protect itself from data loss.

For information about how to recover from this error, see Resolving Blue Screen errors in Windows.

IRQL_GT_ZERO_AT_SYSTEM_SERVICE Parameters

The following parameters are displayed on the blue screen.

ParameterDescription

1

The address of the system function (system call routine)

2

The current IRQL

3

0

4

0

 

 

 

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