8a420f71_BSOD_Index__Parameter_4
[Parameter 1] 0x3 (Windows 2000 only) [Parameter 2] A pointer to the target device object [Parameter 3] A pointer to the device object [Cause] The device driver did not properly set the IRP as "pending" or complete the IRP. [Parameter 4] 
The IRP
BSOD Index
Parameter 4