How are you sure the problem is not with your GPU or Realtek drivers? Please, update the drivers so we all can be so sure.
Install these updated Realtek Ethernet drivers:
Realtek Code:
Rt64win7.sys Fri May 22 10:52:30 2009 (4A16BC2E)
I notice that with the exception of one on December 4, all the BSODs occurred while Black Ops was the front process. Have you tried uninstalling the game, and reinstalling it?
Also, try a clean boot:
Run Selective Startup using System Configuration
Play the game under that, and see if it BSODs.
If no change, contact the makers of the game, and see what they have to say.
...Summary of the dumps: Code:
Built by: 7600.16617.amd64fre.win7_gdr.100618-1621
Debug session time: Sun Dec 26 19:24:23.594 2010 (UTC - 5:00)
System Uptime: 0 days 3:25:13.248
Probably caused by : ntkrnlmp.exe ( nt!ExEnterCriticalRegionAndAcquireFastMutexUnsafe+26 )
DEFAULT_BUCKET_ID: VISTA_DRIVER_FAULT
BUGCHECK_STR: 0x3B
PROCESS_NAME: BlackOpsMP.exe
FAILURE_BUCKET_ID: X64_0x3B_nt!ExEnterCriticalRegionAndAcquireFastMutexUnsafe+26
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Built by: 7600.16617.amd64fre.win7_gdr.100618-1621
Debug session time: Sun Dec 26 15:37:48.505 2010 (UTC - 5:00)
System Uptime: 0 days 12:30:27.144
Probably caused by : ntkrnlmp.exe ( nt!ExEnterCriticalRegionAndAcquireFastMutexUnsafe+26 )
DEFAULT_BUCKET_ID: VISTA_DRIVER_FAULT
BUGCHECK_STR: 0x3B
PROCESS_NAME: BlackOpsMP.exe
FAILURE_BUCKET_ID: X64_0x3B_nt!ExEnterCriticalRegionAndAcquireFastMutexUnsafe+26
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