It looks to me like it's the driver for your Marvell Yukon network card (yk62x64.sys Mon Feb 23 10:02:27 2009)
Also, there's an older driver here: AtiPcie.sys Mon Nov 06 11:59:54 2006
It probably belongs to the chipset drivers for your motherboard.
Please go to the manufacturer's website and download the latest Windows 7 driver for each device.
Then uninstall each device from your system (you may not find an uninstaller for the ATIPCIE.SYS file).
Then install the freshly downloaded files.
Reboot and check the C:\Windows\System32\drivers folder for the date of the ATIPCIE.SYS file. Check the date on the Marvell Yukon driver also - and post back with each of them.
Here's a summary of the BSOD's:
Code:
Built by: 7600.16385.amd64fre.win7_rtm.090713-1255
Debug session time: Thu Dec 3 01:10:14.400 2009 (GMT-5)
System Uptime: 0 days 11:17:38.398
BugCheck 7F, {8, 80050031, 6f8, fffff80003093609}
Probably caused by : NETIO.SYS ( NETIO!CompareSecurityContexts+6a )
DEFAULT_BUCKET_ID: VISTA_DRIVER_FAULT
PROCESS_NAME: System
-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
Built by: 7600.16385.amd64fre.win7_rtm.090713-1255
Debug session time: Fri Dec 4 20:36:09.302 2009 (GMT-5)
System Uptime: 0 days 5:57:56.909
BugCheck 9F, {3, fffffa80048aca20, fffff80000b9c518, fffffa8008c74a00}
*** WARNING: Unable to verify timestamp for yk62x64.sys
*** ERROR: Module load completed but symbols could not be loaded for yk62x64.sys
Probably caused by : yk62x64.sys
DEFAULT_BUCKET_ID: VISTA_DRIVER_FAULT
PROCESS_NAME: System
-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
Built by: 7600.16385.amd64fre.win7_rtm.090713-1255
Debug session time: Fri Dec 4 23:47:43.548 2009 (GMT-5)
System Uptime: 0 days 3:10:27.156
BugCheck 7F, {8, 80050031, 6f8, fffff800030cd609}
Probably caused by : NETIO.SYS ( NETIO!CompareSecurityContexts+6a )
DEFAULT_BUCKET_ID: VISTA_DRIVER_FAULT
PROCESS_NAME: System
-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
Built by: 7600.16385.amd64fre.win7_rtm.090713-1255
Debug session time: Mon Dec 7 02:24:15.155 2009 (GMT-5)
System Uptime: 0 days 3:09:09.152
BugCheck 7F, {8, 80050031, 6f8, fffff800030ce609}
Probably caused by : NETIO.SYS ( NETIO!CompareSecurityContexts+6a )
DEFAULT_BUCKET_ID: VISTA_DRIVER_FAULT
PROCESS_NAME: System
-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
Built by: 7600.16385.amd64fre.win7_rtm.090713-1255
Debug session time: Mon Dec 7 18:52:25.698 2009 (GMT-5)
System Uptime: 0 days 6:19:45.306
BugCheck 7F, {8, 80050031, 6f8, fffff80003092609}
Probably caused by : NETIO.SYS ( NETIO!CompareSecurityContexts+6a )
DEFAULT_BUCKET_ID: VISTA_DRIVER_FAULT
PROCESS_NAME: System
-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
Built by: 7600.16385.amd64fre.win7_rtm.090713-1255
Debug session time: Tue Dec 8 23:13:10.042 2009 (GMT-5)
System Uptime: 0 days 0:13:58.665
BugCheck 7F, {8, 80050031, 6f8, fffff80003081609}
Probably caused by : NETIO.SYS ( NETIO!CompareSecurityContexts+6a )
DEFAULT_BUCKET_ID: VISTA_DRIVER_FAULT
PROCESS_NAME: System
-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
Built by: 7600.16385.amd64fre.win7_rtm.090713-1255
Debug session time: Tue Dec 8 22:58:10.749 2009 (GMT-5)
System Uptime: 0 days 3:57:29.356
BugCheck 7F, {8, 80050031, 6f8, fffff800030db609}
Probably caused by : NETIO.SYS ( NETIO!CompareSecurityContexts+6a )
DEFAULT_BUCKET_ID: VISTA_DRIVER_FAULT
PROCESS_NAME: System
-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
Built by: 7600.16385.amd64fre.win7_rtm.090713-1255
Debug session time: Tue Dec 8 18:37:25.674 2009 (GMT-5)
System Uptime: 0 days 8:51:42.671
BugCheck 7F, {8, 80050031, 6f8, fffff800030db609}
Probably caused by : NETIO.SYS ( NETIO!CompareSecurityContexts+6a )
DEFAULT_BUCKET_ID: VISTA_DRIVER_FAULT
PROCESS_NAME: System
-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
Built by: 7600.16385.amd64fre.win7_rtm.090713-1255
Debug session time: Wed Dec 9 12:23:18.984 2009 (GMT-5)
System Uptime: 0 days 0:09:00.982
BugCheck 7F, {8, 80050031, 6f8, fffff80003095609}
Probably caused by : NETIO.SYS ( NETIO!CompareSecurityContexts+6a )
DEFAULT_BUCKET_ID: VISTA_DRIVER_FAULT
PROCESS_NAME: System
-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
Built by: 7600.16385.amd64fre.win7_rtm.090713-1255
Debug session time: Wed Dec 9 15:44:29.073 2009 (GMT-5)
System Uptime: 0 days 3:20:21.071
BugCheck 7F, {8, 80050031, 6f8, fffff800030d1609}
Probably caused by : NETIO.SYS ( NETIO!CompareSecurityContexts+6a )
DEFAULT_BUCKET_ID: VISTA_DRIVER_FAULT
PROCESS_NAME: System