Hola gente:

Desde hace un par de semanas el PC me da pantallazos azules que me están volviendo loca. He desinstalado el divx que me iba lentísimo y que me hacía sospechar, ya que el problema comenzó más o menos con la última actualización de versión que me descargué.
He pasado el Ewido Online y no tengo virus, pero intento pasar el Avast o el SUperantispyware y me da el pantallazo.
Así que he optado por el WINDBG para intentar descifrar el error y al parecer es por el archivo ntoskrnl.exe. Como es del sistema, no quiero tocarlo, pero necesito ayuda para intentar resolver esto: tengo un PIII, 864MHz, 384 MB de RAM, XP Profesional SP2.
Muchas gracias por vuestro tiempo y buena voluntad!!!
Os pego el log:

Microsoft (R) Windows Debugger Version 6.5.0003.7
Copyright (c) Microsoft Corporation. All rights reserved.


Loading Dump File [C:\WINDOWS\Minidump\Mini011508-01.dmp]
Mini Kernel Dump File: Only registers and stack trace are available

Symbol search path is: SRV*dir*http://msdl.microsoft.com/download/symbols
Executable search path is:
Windows XP Kernel Version 2600 (Service Pack 2) UP Free x86 compatible
Product: WinNt
Built by: 2600.xpsp_sp2_gdr.070227-2254
Kernel base = 0x804d7000 PsLoadedModuleList = 0x8055a620
Debug session time: Tue Jan 15 23:26:58.564 2008 (GMT+1)
System Uptime: 0 days 227.149
Loading Kernel Symbols
.................................................. .................................................. ..................................
Loading unloaded module list
...........
Loading User Symbols
************************************************** *****************************
* *
* Bugcheck Analysis *
* *
************************************************** *****************************

Use !analyze -v to get detailed debugging information.

BugCheck 9C, {1, 8054d570, b2000000, 115}

Probably caused by : ntoskrnl.exe ( nt!KdPitchDebugger+ef4 )

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

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

MACHINE_CHECK_EXCEPTION (9c)
A fatal Machine Check Exception has occurred.
KeBugCheckEx parameters;
x86 Processors
If the processor has ONLY MCE feature available (For example Intel
Pentium), the parameters are:
1 - Low 32 bits of P5_MC_TYPE MSR
2 - Address of MCA_EXCEPTION structure
3 - High 32 bits of P5_MC_ADDR MSR
4 - Low 32 bits of P5_MC_ADDR MSR
If the processor also has MCA feature available (For example Intel
Pentium Pro), the parameters are:
1 - Bank number
2 - Address of MCA_EXCEPTION structure
3 - High 32 bits of MCi_STATUS MSR for the MCA bank that had the error
4 - Low 32 bits of MCi_STATUS MSR for the MCA bank that had the error
IA64 Processors
1 - Bugcheck Type
1 - MCA_ASSERT
2 - MCA_GET_STATEINFO
SAL returned an error for SAL_GET_STATEINFO while processing MCA.
3 - MCA_CLEAR_STATEINFO
SAL returned an error for SAL_CLEAR_STATEINFO while processing MCA.
4 - MCA_FATAL
FW reported a fatal MCA.
5 - MCA_NONFATAL
SAL reported a recoverable MCA and we don't support currently
support recovery or SAL generated an MCA and then couldn't
produce an error record.
0xB - INIT_ASSERT
0xC - INIT_GET_STATEINFO
SAL returned an error for SAL_GET_STATEINFO while processing INIT event.
0xD - INIT_CLEAR_STATEINFO
SAL returned an error for SAL_CLEAR_STATEINFO while processing INIT event.
0xE - INIT_FATAL
Not used.
2 - Address of log
3 - Size of log
4 - Error code in the case of x_GET_STATEINFO or x_CLEAR_STATEINFO
AMD64 Processors
1 - Bank number
2 - Address of MCA_EXCEPTION structure
3 - High 32 bits of MCi_STATUS MSR for the MCA bank that had the error
4 - Low 32 bits of MCi_STATUS MSR for the MCA bank that had the error
Arguments:
Arg1: 00000001
Arg2: 8054d570
Arg3: b2000000
Arg4: 00000115

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


BUGCHECK_STR: 0x9C_IA32_GenuineIntel

CUSTOMER_CRASH_COUNT: 1

DEFAULT_BUCKET_ID: DRIVER_FAULT

LAST_CONTROL_TRANSFER: from 806effaf to 8053354e

SYMBOL_ON_RAW_STACK: 1

STACK_TEXT:
8054d548 806effaf 0000009c 00000001 8054d570 nt!KeBugCheckEx+0x1b
8054d674 806eccae 80042000 00000000 00000000 hal!HalpMcaExceptionHandler+0xdd
8054d674 00000000 80042000 00000000 00000000 hal!HalpMcaExceptionHandlerWrapper+0x46


STACK_COMMAND: dds @$csp ; kb

FOLLOWUP_IP:
nt!KdPitchDebugger+ef4
8054d570 0100 add [eax],eax

FOLLOWUP_NAME: MachineOwner

SYMBOL_NAME: nt!KdPitchDebugger+ef4

MODULE_NAME: nt

IMAGE_NAME: ntoskrnl.exe

DEBUG_FLR_IMAGE_TIMESTAMP: 45e54711

FAILURE_BUCKET_ID: 0x9C_IA32_GenuineIntel_nt!KdPitchDebugger+ef4

BUCKET_ID: 0x9C_IA32_GenuineIntel_nt!KdPitchDebugger+ef4

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