Well, i've had several BSOD in the last couples of months. Changed the MB and it seemed more stable. After that i had several more, regarding a Realtek audio driver, which, with a proper update, was fixed. Stability was paradise, up until now...

My specs:

Gigabyte GA-MA69G-S3H, AMD690g Chipset
DualCore AMD Athlon 64 X2 +4400@2305
1GB DDR2 800 Patriot x2/512
ATI Radeon HD 2600xt 256mb
Thermaltake PurePower ATX 12v 2.0 460w

OS:

Windows XP Professional SP2 (up to date)

Drivers:
All up to date

Anyway, i was playing Gears of War and when trying to quit the game, the PC BSOD'd with the following:


*******************************************************************************
* *
* Bugcheck Analysis *
* *
*******************************************************************************

Use !analyze -v to get detailed debugging information.

BugCheck 10000050, {e1d0c304, 0, bf8afed3, 1}


Could not read faulting driver name


Probably caused by : win32k.sys ( win32k!WatchdogDrvGetDirectDrawInfo+b1 )

Followup: MachineOwner
---------

0: kd> !analyze -v
*******************************************************************************
* *
* Bugcheck Analysis *
* *
*******************************************************************************

PAGE_FAULT_IN_NONPAGED_AREA (50)
Invalid system memory was referenced. This cannot be protected by try-except,
it must be protected by a Probe. Typically the address is just plain bad or it
is pointing at freed memory.
Arguments:
Arg1: e1d0c304, memory referenced.
Arg2: 00000000, value 0 = read operation, 1 = write operation.
Arg3: bf8afed3, If non-zero, the instruction address which referenced the bad memory
address.
Arg4: 00000001, (reserved)

Debugging Details:
------------------


Could not read faulting driver name



READ_ADDRESS: e1d0c304

FAULTING_IP:
win32k!WatchdogDrvGetDirectDrawInfo+b1
bf8afed3 8b0e mov ecx,dword ptr [esi]

MM_INTERNAL_CODE: 1

CUSTOMER_CRASH_COUNT: 2

DEFAULT_BUCKET_ID: DRIVER_FAULT

BUGCHECK_STR: 0x50

PROCESS_NAME: WarGame-G4WLive

LAST_CONTROL_TRANSFER: from bf008af2 to bf8afed3

STACK_TEXT:
aaf07390 bf008af2 e1040080 e48a9754 aaf073cc win32k!WatchdogDrvGetDirectDrawInfo+0xb1
aaf073d8 bf009033 00000001 e14246d8 aaf07460 dxg!vDdEnableDriver+0x8a
aaf073f4 bf892b95 e48a9008 00000001 e31499c8 dxg!DxDdEnableDirectDraw+0xbf
aaf07414 bf8ad4e5 aaf075b4 e192de78 00000000 win32k!PDEVOBJ::bMakeSurface+0xe2
aaf07440 bf8adee5 e192de78 e3b7e8b0 e1f1e7c8 win32k!hCreateHDEV+0x3a9
aaf075b8 bf8b4828 aaf07680 00000000 00000001 win32k!DrvCreateMDEV+0x4dc
aaf076ac bf8b6a8d aaf07680 e1f26008 00000000 win32k!DrvChangeDisplaySettings+0x251
aaf076f0 bf8b6980 024cf9e8 00000000 00000000 win32k!xxxUserChangeDisplaySettings+0x141
aaf07718 805409ac 024cf9e8 00000000 00000000 win32k!NtUserChangeDisplaySettings+0x4a
aaf07718 7c91eb94 024cf9e8 00000000 00000000 nt!KiFastCallEntry+0xfc
WARNING: Frame IP not in any known module. Following frames may be wrong.
024cf9f0 00000000 00000000 00000000 00000000 0x7c91eb94


STACK_COMMAND: kb

FOLLOWUP_IP:
win32k!WatchdogDrvGetDirectDrawInfo+b1
bf8afed3 8b0e mov ecx,dword ptr [esi]

SYMBOL_STACK_INDEX: 0

SYMBOL_NAME: win32k!WatchdogDrvGetDirectDrawInfo+b1

FOLLOWUP_NAME: MachineOwner

MODULE_NAME: win32k

IMAGE_NAME: win32k.sys

DEBUG_FLR_IMAGE_TIMESTAMP: 45f0146f

FAILURE_BUCKET_ID: 0x50_win32k!WatchdogDrvGetDirectDrawInfo+b1

BUCKET_ID: 0x50_win32k!WatchdogDrvGetDirectDrawInfo+b1

Followup: MachineOwner
---------

same happened 1 day ago...this time with PES2008:

*******************************************************************************
* *
* Bugcheck Analysis *
* *
*******************************************************************************

Use !analyze -v to get detailed debugging information.

BugCheck 10000050, {e4ed4304, 0, bf8afed3, 1}


Could not read faulting driver name


Probably caused by : win32k.sys ( win32k!WatchdogDrvGetDirectDrawInfo+b1 )

Followup: MachineOwner
---------

0: kd> !analyze -v
*******************************************************************************
* *
* Bugcheck Analysis *
* *
*******************************************************************************

PAGE_FAULT_IN_NONPAGED_AREA (50)
Invalid system memory was referenced. This cannot be protected by try-except,
it must be protected by a Probe. Typically the address is just plain bad or it
is pointing at freed memory.
Arguments:
Arg1: e4ed4304, memory referenced.
Arg2: 00000000, value 0 = read operation, 1 = write operation.
Arg3: bf8afed3, If non-zero, the instruction address which referenced the bad memory
address.
Arg4: 00000001, (reserved)

Debugging Details:
------------------


Could not read faulting driver name



READ_ADDRESS: e4ed4304

FAULTING_IP:
win32k!WatchdogDrvGetDirectDrawInfo+b1
bf8afed3 8b0e mov ecx,dword ptr [esi]

MM_INTERNAL_CODE: 1

CUSTOMER_CRASH_COUNT: 1

DEFAULT_BUCKET_ID: DRIVER_FAULT

BUGCHECK_STR: 0x50

PROCESS_NAME: PES2008.exe

LAST_CONTROL_TRANSFER: from bf008af2 to bf8afed3

STACK_TEXT:
9837e9c0 bf008af2 e1342080 e4fdf754 9837e9fc win32k!WatchdogDrvGetDirectDrawInfo+0xb1
9837ea08 bf009033 00000001 e1e8cc00 9837ea90 dxg!vDdEnableDriver+0x8a
9837ea24 bf892b95 e4fdf008 00000001 e48f1008 dxg!DxDdEnableDirectDraw+0xbf
9837ea44 bf8ad4e5 00000000 e190eac8 00000000 win32k!PDEVOBJ::bMakeSurface+0xe2
9837ea70 bf8adee5 e190eac8 e1c4e550 e1bc6dd0 win32k!hCreateHDEV+0x3a9
9837ebe8 bf8b4828 9837ecb0 e895a838 00000001 win32k!DrvCreateMDEV+0x4dc
9837ecdc bf8b6a8d 9837ecb0 e160e008 00000000 win32k!DrvChangeDisplaySettings+0x251
9837ed20 bf8b6980 0022fb88 02f7ddf0 00000000 win32k!xxxUserChangeDisplaySettings+0x141
9837ed48 805409ac 0022fb88 02f7ddf0 00000000 win32k!NtUserChangeDisplaySettings+0x4a
9837ed48 7c91eb94 0022fb88 02f7ddf0 00000000 nt!KiFastCallEntry+0xfc
WARNING: Frame IP not in any known module. Following frames may be wrong.
0022fb90 00000000 00000000 00000000 00000000 0x7c91eb94


STACK_COMMAND: kb

FOLLOWUP_IP:
win32k!WatchdogDrvGetDirectDrawInfo+b1
bf8afed3 8b0e mov ecx,dword ptr [esi]

SYMBOL_STACK_INDEX: 0

SYMBOL_NAME: win32k!WatchdogDrvGetDirectDrawInfo+b1

FOLLOWUP_NAME: MachineOwner

MODULE_NAME: win32k

IMAGE_NAME: win32k.sys

DEBUG_FLR_IMAGE_TIMESTAMP: 45f0146f

FAILURE_BUCKET_ID: 0x50_win32k!WatchdogDrvGetDirectDrawInfo+b1

BUCKET_ID: 0x50_win32k!WatchdogDrvGetDirectDrawInfo+b1

Followup: MachineOwner
---------

Have you run a MemTest on your RAM?

yes i did, let it pass 7 times as suggested and it passed.. :/

Any suggestions anyone?