BSOD from ntoskrnl.exe

Hello everyone
After reading many forums i still can't find an answer for the following problem:

My system was running perfectly until i decided to change the GPU, from a GTX 8800 to a MSI 560 Ti Hawk.

During games or video editing programs i get BSOD crashes which appear randomly. I have also attached the minidump.
The problem seems to be pointing at:
ntoskrnl.exe
Unable to load image \SystemRoot\system32\ntoskrnl.exe, Win32 error 0n2

I have tried both to run memtest over night and also video memory test. No error here...

When i run driver verifier (start->verifier.exe) and choose the ntoskrnl.exe file, upon restart i can not boot in windows (same BSOD). I can only run system restore to log back in.

System specs:
Intel Q6600
asus mobo
4GB memory
MSI gtx 560 Ti Hawk


Thanks everyone for taking you time to help.

Hello,

I wonder if your PSU might be underpowering your new card. The old card demanded 105w, the new one 170. What is the make/model of your PSU?

...Summary of the dumps:

Code:

Built by: 7601.17592.amd64fre.win7sp1_gdr.110408-1631
Debug session time: Mon Jul 18 17:46:42.670 2011 (UTC - 4:00)
System Uptime: 0 days 23:21:47.340
Probably caused by : ntkrnlmp.exe ( nt! ?? ::FNODOBFM::`string'+4621f )
DEFAULT_BUCKET_ID:  VISTA_DRIVER_FAULT
BUGCHECK_STR:  0x50
PROCESS_NAME:  svchost.exe
FAILURE_BUCKET_ID:  X64_0x50_nt!_??_::FNODOBFM::_string_+4621f
BiosReleaseDate = 12/14/2007
SystemProductName = Maximus Formula
¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨``
Built by: 7601.17592.amd64fre.win7sp1_gdr.110408-1631
Debug session time: Sun Jul 17 17:11:28.177 2011 (UTC - 4:00)
System Uptime: 0 days 1:41:02.473
*** WARNING: Unable to verify timestamp for win32k.sys
*** ERROR: Module load completed but symbols could not be loaded for win32k.sys
Probably caused by : dxgkrnl.sys ( dxgkrnl!memcpy+60 )
DEFAULT_BUCKET_ID:  VISTA_DRIVER_FAULT
BUGCHECK_STR:  0x50
PROCESS_NAME:  dwm.exe
FAILURE_BUCKET_ID:  X64_0x50_dxgkrnl!memcpy+60
BiosReleaseDate = 12/14/2007
SystemProductName = Maximus Formula
¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨``
Built by: 7601.17592.amd64fre.win7sp1_gdr.110408-1631
Debug session time: Thu Jul 21 17:33:47.833 2011 (UTC - 4:00)
System Uptime: 0 days 0:00:46.519
Probably caused by : ntkrnlmp.exe ( nt!VerifierBugCheckIfAppropriate+3c )
BUGCHECK_STR:  0xc4_13c
DEFAULT_BUCKET_ID:  VERIFIER_ENABLED_VISTA_MINIDUMP
PROCESS_NAME:  svchost.exe
FAILURE_BUCKET_ID:  X64_0xc4_13c_VRFK_nt!VerifierBugCheckIfAppropriate+3c
BiosReleaseDate = 12/14/2007
SystemProductName = Maximus Formula
¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨``
Built by: 7601.17592.amd64fre.win7sp1_gdr.110408-1631
Debug session time: Thu Jul 21 18:29:37.998 2011 (UTC - 4:00)
System Uptime: 0 days 0:00:50.668
Probably caused by : ntkrnlmp.exe ( nt!VerifierBugCheckIfAppropriate+3c )
BUGCHECK_STR:  0xc4_13c
DEFAULT_BUCKET_ID:  VERIFIER_ENABLED_VISTA_MINIDUMP
PROCESS_NAME:  System
FAILURE_BUCKET_ID:  X64_0xc4_13c_VRFK_nt!VerifierBugCheckIfAppropriate+3c
BiosReleaseDate = 12/14/2007
SystemProductName = Maximus Formula
¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨``
Built by: 7601.17592.amd64fre.win7sp1_gdr.110408-1631
Debug session time: Thu Jul 21 15:22:11.656 2011 (UTC - 4:00)
System Uptime: 0 days 8:35:19.326
Probably caused by : ntkrnlmp.exe ( nt! ?? ::FNODOBFM::`string'+4621f )
DEFAULT_BUCKET_ID:  VISTA_DRIVER_FAULT
BUGCHECK_STR:  0x50
PROCESS_NAME:  System
FAILURE_BUCKET_ID:  X64_0x50_nt!_??_::FNODOBFM::_string_+4621f
BiosReleaseDate = 12/14/2007
SystemProductName = Maximus Formula
¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨``
  

Still, try a better PSU, in case your current one isn't cutting it.