Removed graphics card = BSOD's stopped
Replaced graphics card = BSOD's started again
Seems that it's the video card (to me)
For further confirmation I'd run the video tests from the hardware diagnostics link that I provided earlier ( Hardware Diagnostics ) - make sure that the problem graphics card is installed when doing this.
Driver Verifier doesn't seem to be turned off? Have you turned it off?
The purpose of Driver Verifier is to cause BSOD's by stressing drivers with unusual circumstances. It's entirely possible that a system will BSOD on Driver Verifier and not BSOD when it's not running (due to the tests that it uses).
BSOD BUGCHECK SUMMARY
Code:
Loading Dump File [C:\Users\John\_jcgriff2_\dbug\__Kernel__\071212-21106-01.dmp]
Built by: 7601.17835.amd64fre.win7sp1_gdr.120503-2030
Debug session time: Thu Jul 12 09:31:45.379 2012 (UTC - 4:00)
System Uptime: 0 days 0:08:58.597
BugCheck 3B, {c000001d, fffff80002c86576, fffff88004db3370, 0}
Probably caused by : win32k.sys ( win32k!EngReleaseSemaphore+26 )
DEFAULT_BUCKET_ID: WIN7_DRIVER_FAULT
BUGCHECK_STR: 0x3B
PROCESS_NAME: csrss.exe
FAILURE_BUCKET_ID: X64_0x3B_win32k!EngReleaseSemaphore+26
Bugcheck code 0000003B
Arguments 00000000`c000001d fffff800`02c86576 fffff880`04db3370 00000000`00000000
BiosVersion = 3808
BiosReleaseDate = 05/10/2012
SystemManufacturer = System manufacturer
SystemProductName = System Product Name
CPUID: "Intel(R) Core(TM) i5-2500 CPU @ 3.30GHz"
MaxSpeed: 3300
CurrentSpeed: 3310
ииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииии``
Loading Dump File [C:\Users\John\_jcgriff2_\dbug\__Kernel__\071212-22198-01.dmp]
Built by: 7601.17835.amd64fre.win7sp1_gdr.120503-2030
Debug session time: Thu Jul 12 09:21:54.906 2012 (UTC - 4:00)
System Uptime: 0 days 0:29:29.123
BugCheck 3B, {c000001d, fffff80002c84576, fffff8800394dc90, 0}
Probably caused by : ntkrnlmp.exe ( nt!ExpReleaseResourceForThreadLite+46 )
DEFAULT_BUCKET_ID: WIN7_DRIVER_FAULT
BUGCHECK_STR: 0x3B
PROCESS_NAME: csrss.exe
FAILURE_BUCKET_ID: X64_0x3B_nt!ExpReleaseResourceForThreadLite+46
Bugcheck code 0000003B
Arguments 00000000`c000001d fffff800`02c84576 fffff880`0394dc90 00000000`00000000
BiosVersion = 3808
BiosReleaseDate = 05/10/2012
SystemManufacturer = System manufacturer
SystemProductName = System Product Name
CPUID: "Intel(R) Core(TM) i5-2500 CPU @ 3.30GHz"
MaxSpeed: 3300
CurrentSpeed: 3310
ииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииии``
Loading Dump File [C:\Users\John\_jcgriff2_\dbug\__Kernel__\071212-25911-01.dmp]
Built by: 7601.17835.amd64fre.win7sp1_gdr.120503-2030
Debug session time: Thu Jul 12 08:49:35.688 2012 (UTC - 4:00)
System Uptime: 0 days 0:50:36.905
BugCheck C4, {62, fffffa80085fcfd8, fffffa8008413a10, 1}
*** WARNING: Unable to verify timestamp for atikmpag.sys
*** ERROR: Module load completed but symbols could not be loaded for atikmpag.sys
*** WARNING: Unable to verify timestamp for atikmdag.sys
*** ERROR: Module load completed but symbols could not be loaded for atikmdag.sys
*** WARNING: Unable to verify timestamp for win32k.sys
*** ERROR: Module load completed but symbols could not be loaded for win32k.sys
Probably caused by : atikmdag.sys
DRIVER_VERIFIER_DETECTED_VIOLATION (c4)
BUGCHECK_STR: 0xc4_62
DEFAULT_BUCKET_ID: VERIFIER_ENABLED_VISTA_MINIDUMP
PROCESS_NAME: System
FAILURE_BUCKET_ID: X64_0xc4_62_VRF_LEAKED_POOL_IMAGE_atikmdag.sys
Bugcheck code 000000C4
Arguments 00000000`00000062 fffffa80`085fcfd8 fffffa80`08413a10 00000000`00000001
BiosVersion = 3808
BiosReleaseDate = 05/10/2012
SystemManufacturer = System manufacturer
SystemProductName = System Product Name
CPUID: "Intel(R) Core(TM) i5-2500 CPU @ 3.30GHz"
MaxSpeed: 3300
CurrentSpeed: 3310
ииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииии``
Loading Dump File [C:\Users\John\_jcgriff2_\dbug\__Kernel__\071312-24211-01.dmp]
Built by: 7601.17835.amd64fre.win7sp1_gdr.120503-2030
Debug session time: Thu Jul 12 10:08:11.360 2012 (UTC - 4:00)
System Uptime: 0 days 0:05:50.562
BugCheck 3B, {c000001d, fffff80002c8e576, fffff88009707990, 0}
Probably caused by : ntkrnlmp.exe ( nt!ExpReleaseResourceForThreadLite+46 )
DEFAULT_BUCKET_ID: WIN7_DRIVER_FAULT
BUGCHECK_STR: 0x3B
PROCESS_NAME: firefox.exe
FAILURE_BUCKET_ID: X64_0x3B_nt!ExpReleaseResourceForThreadLite+46
Bugcheck code 0000003B
Arguments 00000000`c000001d fffff800`02c8e576 fffff880`09707990 00000000`00000000
BiosVersion = 3808
BiosReleaseDate = 05/10/2012
SystemManufacturer = System manufacturer
SystemProductName = System Product Name
CPUID: "Intel(R) Core(TM) i5-2500 CPU @ 3.30GHz"
MaxSpeed: 3300
CurrentSpeed: 3310
ииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииии``