bug krnl

Καλησπέρα Άγγελε. Εδω και μερικες μερες που και που κολλάει το λαπτοπ και μετά απο 1 2  λεπτα πεταει μπλε οθονη με ερρορ και κανει ρεσταρτ. σου αραδειαζω το ρεπορτ απο το  who crashed. oi driver ειναι όλοι αναναειωμένοι.
ω

windows version: Windows 8.1 , 6.2, build: 9200
windows dir: C:\WINDOWS
Hardware: Inspiron 5749, Dell Inc., 0VK8J4
CPU: GenuineIntel Intel(R) Core(TM) i7-5500U CPU @ 2.40GHz Intel586, level: 6
4 logical processors, active mask: 15
RAM: 8497123328 total

On Sat 1/8/2015 11:22:29 μμ GMT your computer crashed
crash dump file: C:\WINDOWS\Minidump80215-18562-01.dmp
This was probably caused by the following module: ntoskrnl.exe (nt+0x150CA0)
Bugcheck code: 0x9F (0x3, 0xFFFFE000E1FFB880, 0xFFFFD00139E6A960, 0xFFFFE000E1E9A430)
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.

On Sat 1/8/2015 11:22:29 μμ GMT your computer crashed
crash dump file: C:\WINDOWS\memory.dmp
This was probably caused by the following module: ntkrnlmp.exe (nt!KeBugCheckEx+0x0)
Bugcheck code: 0x9F (0x3, 0xFFFFE000E1FFB880, 0xFFFFD00139E6A960, 0xFFFFE000E1E9A430)
Error: DRIVER_POWER_STATE_FAILURE
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.