blue screen errors "NTFS file system / system service exception

OK. Disable verifier now, and use the computer normally. If you get one more crash, let us see it.

Disable Driver verifier as stated earlier. It is not of any more help as it is seen.

Code:

CUSTOMER_CRASH_COUNT:  1

DEFAULT_BUCKET_ID:  VERIFIER_ENABLED_VISTA_MINIDUMP

BUGCHECK_STR:  0xA

PROCESS_NAME:  System

Try to update the following drivers:
Atheros network adapter driver: ATHEROS drivers for Microsoft Windows (Atheros?????)
Atheros Bluetooth Driver: ATHEROS drivers for Microsoft Windows (Atheros?????)
Conexant High Definition SmartAudio: Conexant - Support
Intel Management Engine Interface: Intel Download Center
Intel rapid Storage driver: http://downloadcenter.intel.com/Deta...ST%29&lang=eng
nVidia Video drivers: Drivers - Download NVIDIA Drivers
Realtek RTL8168D/8111D Family PCI-E Gigabit Ethernet NIC: Realtek
Microsoft Application Virtualization (App-V) driver: Application Virtualization by Microsoft | Windows 8 Enterprise

Does machine BSOD in safe mode ?
if not you could try a clean boot Troubleshoot Application Conflicts by Performing a Clean Startup to remove all startup items and all non MS services, its a long shot but worth a try IMO

Also you have stressed cpu how about gfx and that has ram too ?
Video Card - Stress Test with Furmark

Looks like a stubborn one.

Blue Screen of Death (BSOD) Posting Instructions
When posting a new crash dump, include all System File Collection and health reports. They contain valuable information that we can use to find the cause of the crashes. Each crash report will contain new information that will be useful.

Run the OCCT stability test, at the end it will produce graphs that may give some clues .
OCCT stability checking tool
Run the CPU:OCCT test for at least 30 minutes, be sure to monitor your CPU and GPU temps.
Set the time before you start.
When its done, pass or fail, it will make some graphs. Post these here as they are useful for analyses.

Which Intel RST driver are you using?
If it's not v11.2.0.1006 or earlier, install v11.2.0.1006. there have been known issues with drivers after that version.
Intel Rapid Storage Technology 11.2.0.1006

Hardware can be very fickle, it does happen that a component will pass tests several times and then fail, especially RAM and to a lesser extent hard drives.
If the RST driver doesn't help, you may consider installing a different HDD and testing the system. That way the clients HDD and programs won't be disturbed.

If allowed, remove all Sony utilities, these types of programs are known to crash systems.

From old System Events logs:

Code:

Event[34981]:
  Log Name: System
  Source: Microsoft-Windows-Kernel-Processor-Power
  Date: 2012-12-06T14:55:40.622
  Event ID: 26
  Task: N/A
  Level: Informationen
  Opcode: Info
  Keyword: N/A
  User: S-1-5-18
  User Name: NT-AUTORITÄT\SYSTEM
  Computer: Henning-VAIO
  Description: 
Prozessor 3 in Gruppe 0 weist Folgendes auf:

2 inaktive Zustände
7 Leistungszustände
8 Drosselungszustände

Event[34982]:
  Log Name: System
  Source: Microsoft-Windows-Kernel-Power
  Date: 2012-12-06T14:55:41.590
  Event ID: 89
  Task: N/A
  Level: Informationen
  Opcode: Info
  Keyword: N/A
  User: S-1-5-18
  User Name: NT-AUTORITÄT\SYSTEM
  Computer: Henning-VAIO
  Description: 
Die ACPI-Thermozone ACPI\ThermalZone\THRM wurde aufgelistet.             
_PSV = 374K             
_TC1 = 2             
_TC2 = 5             
_TSP = 1000ms             
_AC0 = 0K             
_AC1 = 0K             
_AC2 = 0K             
_AC3 = 0K             
_AC4 = 0K             
_AC5 = 0K             
_AC6 = 0K             
_AC7 = 0K             
_AC8 = 0K             
_AC9 = 0K             
_CRT = 357K             
_HOT = 0K             
_PSL - siehe Ereignisdaten.

Need the current System Event Logs to confirm.
This system has been overheating in the past.

The last Event Log entry was 2012-12-06, check setting, Clear Log if no new event are recorded.
To check the System Event Log settings.
1. Start Event Viewer.
2. In the console tree, expand Windows Logs and select System.
3. On the Action menu, click Properties.
4. In the General Tab, ensure 'Enable logging' is checked.
Maximum log size should be 20480
Under 'When maximum event log size is reached': select 'Overwrite events as needed (oldest events first)'
Click OK.

If you are still not getting new System Event Logs, you can 'Clear Log' on the same page.

Can you translate this Critical Event:

Code:

Event[34976]:
  Log Name: System
  Source: Microsoft-Windows-Kernel-Power
  Date: 2012-12-06T14:55:39.671
  Event ID: 41
  Task: N/A
  Level: Kritisch
  Opcode: Info
  Keyword: N/A
  User: S-1-5-18
  User Name: NT-AUTORITÄT\SYSTEM
  Computer: Henning-VAIO
  Description: 
Das System wurde neu gestartet, ohne dass es zuvor ordnungsgemäß heruntergefahren wurde. Dieser Fehler kann auftreten, wenn das System nicht mehr reagiert hat oder abgestürzt ist oder die Stromzufuhr unerwartet unterbrochen wurde.

There are 48 items in the Start Menu, you should remove most of these and/or have them start at login.

Uninstall McAfee, it is known to cause crashes in Windows 7. Use MSE for testing.

Code:

Event[34726]:
  Log Name: System
  Source: Service Control Manager
  Date: 2012-12-06T11:17:51.889
  Event ID: 7036
  Task: N/A
  Level: Informationen
  Opcode: N/A
  Keyword: Klassisch
  User: N/A
  User Name: N/A
  Computer: Henning-VAIO
  Description: 
Dienst "McAfee Scanner" befindet sich jetzt im Status "Beendet".

From your App Event Log (which are up to date):
This is a CPU error, usually caused by overheating.
A lot of these.

Code:

Event[18373]:
  Log Name: Application
  Source: Microsoft-Windows-WMI
  Date: 2013-01-17T09:31:51.000
  Event ID: 10
  Task: N/A
  Level: Fehler
  Opcode: N/A
  Keyword: Klassisch
  User: N/A
  User Name: N/A
  Computer: Henning-VAIO
  Description: 
Ereignisfilter mit Abfrage "SELECT * FROM __InstanceModificationEvent WITHIN 60 WHERE TargetInstance ISA "Win32_Processor" AND TargetInstance.LoadPercentage > 99" konnte im Namespace "//./root/CIMV2" nicht reaktiviert werden aufgrund des Fehlers 0x80041003. Ereignisse können nicht durch diesen Filter geschickt werden, bis dieses Problem gelöst ist.

Give the Seven Forums Diagnostic Tool more time to run.

Change the Intel RST driver to v11.2.0.1006.

Last crash:
Not much info to go on.

Code:

STOP 0x0000001A: MEMORY_MANAGEMENT
Usual causes:  Device driver, memory, kernel
BUGCHECK_STR:  0x1a_5100
DEFAULT_BUCKET_ID:  WIN7_DRIVER_FAULT
SYMBOL_NAME:  nt! ?? ::FNODOBFM::`string'+aec7
FAILURE_BUCKET_ID:  X64_0x1a_5100_nt!_??_::FNODOBFM::_string_+aec7

Need the Event Logs.