Every couple of days my Surface Pro 4, (6th Gen Intel Core i7, 512GB SSD, 16GB RAM) crashes due to a Driver_Power_State_Failure. (I changed the settings in CCleaner which wiped most of my minidump data). These crashes do not result in visible BSODs; rather, processes stop working correctly so I end up restarting my computer. In this last instance, I was uninstalling TechSmith Snagit 12 but the uninstall hung. I did not have any external devices attached today, nor do the crashes seem to be related to external devices. All Windows updates are installed.
For all of these crashes, when I restart my computer the restart hangs and takes about five minutes to complete.
Lastly, not sure if this adds anything to the attached file, but I ran WhoCrashed and here is a summary of the last crash:
On Tue 6/14/2016 21:51:48 GMT your computer crashed
crash dump file: C:\WINDOWS\Minidump\061416-9328-01.dmp
This was probably caused by the following module: ntkrnlmp.exe (nt!KeBugCheckEx+0x0)
Bugcheck code: 0x9F (0x4, 0x12C, 0xFFFFE002025F4240, 0xFFFFF8012446E8B0)
Bug check description: This bug check indicates that the driver is in an inconsistent or invalid power state.
This appears to be a typical software driver bug and is not likely to be caused by a hardware problem.
The crash took place in the Windows kernel. Possibly this problem is caused by another driver that cannot be identified at this time.