Bug Check 0xD4: SYSTEM_SCAN_AT_RAISED_IRQL_CAUGHT_IMPROPER_DRIVER_UNLOAD
The SYSTEM_SCAN_AT_RAISED_IRQL_CAUGHT_IMPROPER_DRIVER_UNLOAD bug check has a value of 0x000000D4. This indicates that a driver did not cancel pending operations before unloading.
Important Info If You Have Received a STOP Code
If you received a blue screen error, or stop code, the computer has shut down abruptly to protect itself from data loss. A hardware device, its driver, or related software might have caused this error. If your copy of Windows came with your computer, call the manufacturer of your computer. If you purchased Windows separately from your computer, Microsoft provides support. To find contact info for Microsoft or your computer manufacturer, Contact Support.
If you have experience with computers and want to try to recover from this error, follow the steps provided in the Microsoft article Resolving STOP (Blue Screen) Errors in Windows.
These actions might prevent an error like this from happening again:
- Download and install updates and device drivers for your computer from Windows Update.
- Scan your computer for computer viruses.
- Check your hard disk for errors.
SYSTEM_SCAN_AT_RAISED_IRQL_CAUGHT_IMPROPER_DRIVER_UNLOAD Parameters
The following parameters are displayed on the blue screen.
| Parameter | Description |
|---|---|
|
1 |
Memory referenced |
|
2 |
IRQL at time of reference |
|
3 |
0: Read 1: Write |
|
4 |
Address that referenced memory |
If the driver responsible for the error can be identified, its name is printed on the blue screen and stored in memory at the location (PUNICODE_STRING) KiBugCheckDriver.
Cause
This driver failed to cancel lookaside lists, DPCs, worker threads, or other such items before unload. Subsequently, the system attempted to access the driver's former location at a raised IRQL.
Resolution
To begin debugging, use a kernel debugger to get a stack trace. If the driver that caused the error has been identified, activate Driver Verifier and attempt to replicate this bug.
For full details on Driver Verifier, see the Windows Driver Kit.
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Build date: 4/9/2013
