No Mdl: No System Buffer: Thread 00000000: Irp stack trace. Irp is active with 6 stacks 5 is current (= 0xffffe58f67630de0) The structure of the Windbg command (entered toward the bottom of the Windbg screen, to the right of kd>), is: In the event that Microsoft inadvertently sent out a bad driver, they would know it within 1-3 days pull the affected module from future Windows Update runs fix the module in question, re-release it to the public via Windows Updates and/or set up a download page for those users who wish to do it immediately and do it themselves. It does happen from time-to-time, but it is also a very rare event. If after Windows Updates are installed by hundreds-of-millions of systems on one night, or even spread over a few nights, if there is a rogue driver by Microsoft that got through, Microsoft's error reporting arm, WERCON, would immediately begin sending crash data back to Microsoft (including dump files) and Microsoft would know very quickly that one of its own modules is responsible. Microsoft drivers are considered to be sacrosanct and therefore are ruled out as the culprit in a BSOD. In this case it is 0x3, which tells you immediately that the Windbg command !irp can be run, which hopefully will reveal the name of a 3rd party driver (non-Microsoft driver). NOTE: there is no P2 or P3 listed in the parameters of the bugcheck - I simply listed the commas with no values between them where these items would normally be)įor 0x9f bugcheck dumps, first, you look at P1. If you come upon a dump with bugcheck and parms = 0x9f (0x3,fffffa80'0ab61bd0) ¹ (the memory address in P4 is variable - no 2 dumps or systems will contain the exact same memory address). P4 = memory address of the blocked IRP (an I/O Request Packet)Ĭause - A device object has been blocking an IRP for too long a time. In Windows 7 and later, nt!TRIAGE_9F_POWER P3 = memory address of the functional device object (FDO) of the stack.

P2 = memory address of the physical device object (PDO) of the stack Every bugcheck has 4 Parameters enclosed by parenthesis following it.

P1, P2, P3, P4 = the Parameters (numbers) inside the parenthesis after the bugcheck code. 0x9f=DRIVER_POWER_STATE_FAILURE and indicates that a driver is in an inconsistent or invalid power state.

How to fix driver power state failure