Driver Power State Failure Blue Screen

On Sun 26/04/2015 13:38:45 GMT your computer crashed
crash dump file: C:\WINDOWS\Minidump\042615-31044-01.dmp
This was probably caused by the following module: ntoskrnl.exe (nt+0x5A440) 
Bugcheck code: 0x9F (0x3, 0xFFFFFA8008202600, 0xFFFFF800E8E3A930, 0xFFFFFA8007613C10)
Error: DRIVER_POWER_STATE_FAILURE
file path: C:\WINDOWS\system32\ntoskrnl.exe
product: Microsoft® Windows® Operating System
company: Microsoft Corporation
description: NT Kernel & System
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.