Bluescreen of Death incessant !

Bonjour,
J'ai formaté mon pc, il y a deux semaines,
la cause, des bluescreens incessants.
Au début ça allait, mais maintenant, ça recommence ...
J'ai fini par comprendre la cause ...
C'est parce que je mets mes pilotes à jour et
apparement, il n'aime pas ça !

Surement, mes pilotes nVidia, mais je n'en suis pas sur,
alors j'ai installer le logiciel WhoCrashed, qui "analyse" les
bluescreens.

Voici les rapports qu'il me donne:

On Thu 25/08/2011 09:21:31 GMT your computer crashed
crash dump file: C:\Windows\memory.dmp
This was probably caused by the following module: Unknown ()
Bugcheck code: 0x3B (0xC0000005, 0xFFFFF960001130A2, 0xFFFFF88003F8A0D0, 0x0)
Error: SYSTEM_SERVICE_EXCEPTION
Bug check description: This indicates that an exception happened while executing a routine that transitions from non-privileged code to privileged code.
This appears to be a typical software driver bug and is not likely to be caused by a hardware problem.
A third party driver was identified as the probable root cause of this system error. It is suggested you look for an update for the following driver: Unknown .
Google query: Unknown SYSTEM_SERVICE_EXCEPTION

On Thu 25/08/2011 09:10:53 GMT your computer crashed
crash dump file: C:\Windows\Minidump\082511-18766-01.dmp
This was probably caused by the following module: ntoskrnl.exe (nt+0x7E0CA)
Bugcheck code: 0x10E (0x1F, 0xFFFFF8A00A77F640, 0x0, 0x100F0)
Error: VIDEO_MEMORY_MANAGEMENT_INTERNAL
file path: C:\Windows\system32\ntoskrnl.exe
product: Microsoft® Windows® Operating System
company: Microsoft Corporation
description: NT Kernel & System
Bug check description: This indicates that the video memory manager has encountered a condition that it is unable to recover from.
The crash took place in the Windows kernel. Possibly this problem is caused by another driver which cannot be identified at this time.

Il y en a d'autres, mais ceux-ci arrivent le plus fréquement.
Voilà, si vous pouvez m'aider je vous en remercie d'avance !

PS: si vous avez besoin de ma config, ou du fichier minidump,demandez le moi !