Q: BSOD - Windows 8 Driver Power State Failure

I received a Driver Power State Failure, that was the second time. Could anyone help me to solve this?

Much appreciated.





The attached DMP file is of the DRIVER_POWER_STATE_FAILURE (9f) bug check.

This bug check indicates that the driver is in an inconsistent or invalid power state.

BugCheck 9F, {3, ffffe0000487f060, fffff800f1ba1840, ffffe00005985010}

By default, the fault of the crash is usbhub.sys which is NOT the true cause. If we run an !irp on the 4th parameter of the bug check, we get the following:

>[ 16, 2]   0 e1 ffffe00004f80030 00000000 fffff800eff98d80-ffffe0000f78f3d0 Success Error Cancel pending
          Unable to load image \SystemRoot\system32\DRIVERS\btfilter.sys, Win32 error 0n2
*** WARNING: Unable to verify timestamp for btfilter.sys
*** ERROR: Module load completed but symbols could not be loaded for btfilter.sys
 \Driver\BtFilter    nt!PopRequestCompletion

^^ btfilter.sys is the Atheros Bluetooth driver.


1. Update your Bluetooth drivers to the latest version via Dell's website -

2. If you're still crashing after the above, please remove and replace McAfee with Windows 8's built-in Windows Defender for temporary troubleshooting purposes as it may be causing conflicts:

McAfee removal -

Windows Defender (how to turn on after removal) -



Debugger/Reverse Engineer.

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Views: 1,335 Last updated: February 12, 2018 Applies to: