Crash in Arma 2 that results in complete reboot of PC

[waycool 0]

Hi All

I have been running Arma2 fine prior but recently I am getting a crash with my Steam version of Arma 2. The debugging info is below. Any debug guru that can decipher the data below? Any help appreciated.

Debugging Details:

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BUGCHECK_STR: 0x9C_AuthenticAMD

CUSTOMER_CRASH_COUNT: 2

DEFAULT_BUCKET_ID: DRIVER_FAULT

PROCESS_NAME: arma2.exe

LAST_CONTROL_TRANSFER: from 806e9bf7 to 804f9f43

STACK_TEXT:

ba33c028 806e9bf7 0000009c 00000000 ba33c050 nt!IopShutdownBaseFileSystems+0xbf

ba33c154 806e4c52 ba338d70 00000000 00000000 hal!HalpPCIWriteUshortType1+0x43

00000000 00000000 00000000 00000000 00000000 hal!`string'+0x6

STACK_COMMAND: kb

FOLLOWUP_IP:

nt!IopShutdownBaseFileSystems+bf

804f9f43 5d pop ebp

SYMBOL_STACK_INDEX: 0

SYMBOL_NAME: nt!IopShutdownBaseFileSystems+bf

FOLLOWUP_NAME: MachineOwner

MODULE_NAME: nt

IMAGE_NAME: ntoskrnl.exe

DEBUG_FLR_IMAGE_TIMESTAMP: 498c114b

FAILURE_BUCKET_ID: 0x9C_AuthenticAMD_nt!IopShutdownBaseFileSystems+bf

BUCKET_ID: 0x9C_AuthenticAMD_nt!IopShutdownBaseFileSystems+bf

Followup: MachineOwner

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[Bulldogs 10]

Tough error to localize. The most common causes are driver problems (most often the motherboard drivers), Ram problems (download and run memtest), or lack of power (try removing everything you don't need from the computer, including anything plugged into the USB ports apart from keyboard and mouse)