Frequent system-crashes in Windows 8.1

My Sony Vaio Tap 11 (model: SVT1121C5E) runs very unstable ever since I bought it about 3 months ago. Almost every day the system crashes, sometimes multiple times. Sometimes with prior bluescreen, Windows colleting data and then stopping at 100%.

Occasionally the device shuts down and automatically restarts.

Sometimes the screen becomes black and the device can be turned off only by holding the power-button for a few seconds.

I´m running Windows 8.1 and all the current device-drivers, bios-update and Windows-updates are installed. I would really need some help here.

The event-viewer has some "Event41, Kernel-Power" entries in the category "critical" such as following: <Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event"> - <System> <Provider Name="Microsoft-Windows-Kernel-Power" Guid="{331C3B3A-2005-44C2-AC5E-77220C37D6B4}" /> <EventID>41</EventID> <Version>3</Version> <Level>1</Level> <Task>63</Task> <Opcode>0</Opcode> <Keywords>0x8000000000000002</Keywords> <TimeCreated SystemTime="2014-03-06T10:01:05.426979800Z" /> <EventRecordID>58462</EventRecordID> <Correlation /> <Execution ProcessID="4" ThreadID="8" /> <Channel>System</Channel> <Computer>Parinibbana</Computer> <Security UserID="S-1-5-18" /> </System> - <EventData> <Data Name="BugcheckCode">126</Data> <Data Name="BugcheckParameter1">0xffffffffc0000005</Data> <Data Name="BugcheckParameter2">0xfffff80077ebbb76</Data> <Data Name="BugcheckParameter3">0xffffd00026b5b638</Data> <Data Name="BugcheckParameter4">0xffffd00026b5ae40</Data> <Data Name="SleepInProgress">0</Data> <Data Name="PowerButtonTimestamp">0</Data> <Data Name="BootAppStatus">0</Data> </EventData> </Event>

Another frequently occurring error is "LoadPerf" with EventID: 3012 The general-tab says: "The performance strings in the Performance registry value is corrupted when process Performance extension counter provider. The BaseIndex value from the Performance registry is the first DWORD in the Data section, LastCounter value is the second DWORD in the Data section, and LastHelp value is the third DWORD in the Data section."

In the details of the XML-view it says: <Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event"> - <System> <Provider Name="Microsoft-Windows-Kernel-Power" Guid="{331C3B3A-2005-44C2-AC5E-77220C37D6B4}" /> <EventID>41</EventID> <Version>3</Version> <Level>1</Level> <Task>63</Task> <Opcode>0</Opcode> <Keywords>0x8000000000000002</Keywords> <TimeCreated SystemTime="2014-03-06T10:01:05.426979800Z" /> <EventRecordID>58462</EventRecordID> <Correlation /> <Execution ProcessID="4" ThreadID="8" /> <Channel>System</Channel> <Computer>Parinibbana</Computer> <Security UserID="S-1-5-18" /> </System> - <EventData> <Data Name="BugcheckCode">126</Data> <Data Name="BugcheckParameter1">0xffffffffc0000005</Data> <Data Name="BugcheckParameter2">0xfffff80077ebbb76</Data> <Data Name="BugcheckParameter3">0xffffd00026b5b638</Data> <Data Name="BugcheckParameter4">0xffffd00026b5ae40</Data> <Data Name="SleepInProgress">0</Data> <Data Name="PowerButtonTimestamp">0</Data> <Data Name="BootAppStatus">0</Data> </EventData> </Event>

In order to get a clearer picture of my system-crashes I downloaded a software called "WhoCrashed", clicked on "Analyse" and the following is the result of it´s log:

System Information (local) computer name: PARINIBBANA windows version: Windows 8 , 6.2, build: 9200 windows dir: C:\WINDOWS Hardware: SVT1121C5E, Sony Corporation, VAIO CPU: GenuineIntel Intel(R) Core(TM) i7-4610Y CPU @ 1.70GHz Intel586, level: 6 4 logical processors, active mask: 15 RAM: 4185702400 total VM: 2147352576, free: 1916170240 Crash Dump Analysis Crash dump directory: C:\WINDOWS\Minidump Crash dumps are enabled on your computer.

On Wed 19.03.2014 22:18:28 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, 0xFFFFE00008DC4410, 0xFFFFF80289209840, 0xFFFFE0000172C010) 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.

On Wed 19.03.2014 08:12:08 GMT your computer crashed crash dump file: C:\WINDOWS\Minidump\031914-5859-01.dmp This was probably caused by the following module: ntoskrnl.exe (nt+0x150B36) Bugcheck code: 0x9F (0x4, 0x12C, 0xFFFFE00000F14880, 0xFFFFF800EDD7E860) 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 Sun 16.03.2014 15:16:25 GMT your computer crashed crash dump file: C:\WINDOWS\Minidump\031614-7609-01.dmp This was probably caused by the following module: ntoskrnl.exe (nt+0x14DCA0) Bugcheck code: 0xA (0x0, 0x2, 0x0, 0xFFFFF802530BD533) Error: IRQL_NOT_LESS_OR_EQUAL file path: C:\WINDOWS\system32\ntoskrnl.exe product: Microsoft® Windows® Operating System company: Microsoft Corporation description: NT Kernel & System Bug check description: This indicates that Microsoft Windows or a kernel-mode driver accessed paged memory at DISPATCH_LEVEL or above. 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 Sun 16.03.2014 15:16:25 GMT your computer crashed crash dump file: C:\WINDOWS\memory.dmp This was probably caused by the following module: nuserver64.sys (NUServer64+0x17C13) Bugcheck code: 0xA (0x0, 0x2, 0x0, 0xFFFFF802530BD533) Error: IRQL_NOT_LESS_OR_EQUAL file path: C:\WINDOWS\system32\drivers\nuserver64.sys product: Network USB Server company: Elite Silicon Technology Inc. description: Network USB Server 64bit Device Driver Bug check description: This indicates that Microsoft Windows or a kernel-mode driver accessed paged memory at DISPATCH_LEVEL or above. This appears to be a typical software driver bug and is not likely to be caused by a hardware problem. A third party driver was identified as the probable root cause of this system error. It is suggested you look for an update for the following driver: nuserver64.sys (Network USB Server 64bit Device Driver, Elite Silicon Technology Inc.). Google query: Elite Silicon Technology Inc. IRQL_NOT_LESS_OR_EQUAL

On Thu 06.03.2014 10:00:19 GMT your computer crashed crash dump file: C:\WINDOWS\Minidump\030614-7234-01.dmp This was probably caused by the following module: ntoskrnl.exe (nt+0xADB76) Bugcheck code: 0x1000007E (0xFFFFFFFFC0000005, 0xFFFFF80077EBBB76, 0xFFFFD00026B5B638, 0xFFFFD00026B5AE40) Error: SYSTEM_THREAD_EXCEPTION_NOT_HANDLED_M file path: C:\WINDOWS\system32\ntoskrnl.exe product: Microsoft® Windows® Operating System company: Microsoft Corporation description: NT Kernel & System Bug check description: This indicates that a system thread generated an exception which the error handler did not catch. 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 Thu 06.03.2014 04:55:47 GMT your computer crashed crash dump file: C:\WINDOWS\Minidump\030614-6921-01.dmp This was probably caused by the following module: ntoskrnl.exe (nt+0x14DCA0) Bugcheck code: 0xA (0x1, 0x2, 0x0, 0xFFFFF800060AE5D1) Error: IRQL_NOT_LESS_OR_EQUAL file path: C:\WINDOWS\system32\ntoskrnl.exe product: Microsoft® Windows® Operating System company: Microsoft Corporation description: NT Kernel & System Bug check description: This indicates that Microsoft Windows or a kernel-mode driver accessed paged memory at DISPATCH_LEVEL or above. 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 Thu 06.03.2014 03:58:36 GMT your computer crashed crash dump file: C:\WINDOWS\Minidump\030614-6015-01.dmp This was probably caused by the following module: ntoskrnl.exe (nt+0x425637) Bugcheck code: 0x1000007E (0xFFFFFFFFC0000005, 0xFFFFF803D029D637, 0xFFFFD000237F57D8, 0xFFFFD000237F4FE0) Error: SYSTEM_THREAD_EXCEPTION_NOT_HANDLED_M file path: C:\WINDOWS\system32\ntoskrnl.exe product: Microsoft® Windows® Operating System company: Microsoft Corporation description: NT Kernel & System Bug check description: This indicates that a system thread generated an exception which the error handler did not catch. 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 Wed 26.02.2014 21:57:39 GMT your computer crashed crash dump file: C:\WINDOWS\Minidump\022714-5343-01.dmp This was probably caused by the following module: netwbw02.sys (0xFFFFF8000284FDFC) Bugcheck code: 0xD1 (0x40, 0x2, 0x0, 0xFFFFF8000284FDFC) Error: DRIVER_IRQL_NOT_LESS_OR_EQUAL file path: C:\WINDOWS\system32\drivers\netwbw02.sys product: Intel® Wireless WiFi Link Adapter company: Intel Corporation description: Intel® Wireless WiFi Link Driver Bug check description: This indicates that a kernel-mode driver attempted to access pageable memory at a process IRQL that was too high. This appears to be a typical software driver bug and is not likely to be caused by a hardware problem. A third party driver was identified as the probable root cause of this system error. It is suggested you look for an update for the following driver: netwbw02.sys (Intel® Wireless WiFi Link Driver, Intel Corporation). Google query: Intel Corporation DRIVER_IRQL_NOT_LESS_OR_EQUAL

On Tue 25.02.2014 08:27:36 GMT your computer crashed crash dump file: C:\WINDOWS\Minidump\022514-7359-01.dmp This was probably caused by the following module: ntoskrnl.exe (nt+0x425637) Bugcheck code: 0x1000007E (0xFFFFFFFFC0000005, 0xFFFFF8023C840637, 0xFFFFD000397EA7D8, 0xFFFFD000397E9FE0) Error: SYSTEM_THREAD_EXCEPTION_NOT_HANDLED_M file path: C:\WINDOWS\system32\ntoskrnl.exe product: Microsoft® Windows® Operating System company: Microsoft Corporation description: NT Kernel & System Bug check description: This indicates that a system thread generated an exception which the error handler did not catch. 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 Sun 26.01.2014 06:29:07 GMT your computer crashed crash dump file: C:\WINDOWS\Minidump\012614-6859-01.dmp This was probably caused by the following module: ntoskrnl.exe (nt+0x14DCA0) Bugcheck code: 0x4E (0x9A, 0x1553B7, 0x6, 0x2) Error: PFN_LIST_CORRUPT file path: C:\WINDOWS\system32\ntoskrnl.exe product: Microsoft® Windows® Operating System company: Microsoft Corporation description: NT Kernel & System Bug check description: This indicates that the page frame number (PFN) list is corrupted. This appears to be a typical software driver bug and is not likely to be caused by a hardware problem. This might be a case of memory corruption. More often memory corruption happens because of software errors in buggy drivers, not because of faulty RAM modules. The crash took place in the Windows kernel. Possibly this problem is caused by another driver that cannot be identified at this time.

On Tue 21.01.2014 12:42:17 GMT your computer crashed crash dump file: C:\WINDOWS\Minidump\012114-6000-01.dmp This was probably caused by the following module: ntoskrnl.exe (nt+0x425637) Bugcheck code: 0x1000007E (0xFFFFFFFFC0000005, 0xFFFFF80120A2E637, 0xFFFFD00026ECC7D8, 0xFFFFD00026ECBFE0) Error: SYSTEM_THREAD_EXCEPTION_NOT_HANDLED_M file path: C:\WINDOWS\system32\ntoskrnl.exe product: Microsoft® Windows® Operating System company: Microsoft Corporation description: NT Kernel & System Bug check description: This indicates that a system thread generated an exception which the error handler did not catch. 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.

Conclusion

32 crash dumps have been found and analyzed. Only 10 are included in this report. 2 third party drivers have been identified to be causing system crashes on your computer. It is strongly suggested that you check for updates for these drivers on their company websites. Click on the links below to search with Google for updates for these drivers: netwbw02.sys (Intel® Wireless WiFi Link Driver, Intel Corporation) nuserver64.sys (Network USB Server 64bit Device Driver, Elite Silicon Technology Inc.) If no updates for these drivers are available, try searching with Google on the names of these drivers in combination the errors that have been reported for these drivers and include the brand and model name of your computer as well in the query. This often yields interesting results from discussions from users who have been experiencing similar problems. End of WhoCrashed´s Analysis.

For more information I have put the Windows event-viewer

a) application events

b) system events

c) Windows Power Shell logs, 

as well as the dumpfile-list on my dropbox: https://www.dropbox.com/sh/l840x044kepyrna/aSIqO7PmqC 

Please feel free to have a look at them too.

For comments and suggestions I would be very grateful.

Thanks