Problème de BSOD récurent

Bonjour,
j'étais en train de regarder un film quand le premier écran bleu est apparu , je n'avais rien installé avant.
Après ça , impossible de redémarrer mon pc , BSOD au bout de quelques minutes après chaque démarrage....

J'ai donc tenté de faire une réparation automatique de windows , qui n'a pas fonctionnée à cause des interruptions .

Pour finir j'ai formaté mon disque et réinstallé windows 7.

Tout fonctionnait très bien et deux jour plus tard mon problème est réapparut .

J'ai utilisé who crashed pour essayer de comprendre l'origine de ces blue screen , mais je ne sais pas comment interpréter les résultats , donc si quelqu'un peut m'expliquer ce qu'il se passe , cela me rendrait un énorme service.


et le message de who crashed:

On Thu 3/10/2011 9:42:11 PM GMT your computer crashed
crash dump file: C:\windows\Minidump\031011-50060-01.dmp
This was probably caused by the following module: ntoskrnl.exe (nt+0x71F00)
Bugcheck code: 0x50 (0xFFFFF14007136458, 0x0, 0xFFFFF80002B241A5, 0x7)
Error: PAGE_FAULT_IN_NONPAGED_AREA
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 invalid system memory has been referenced.
This appears to be a typical software driver bug and is not likely to be caused by a hardware problem.
The crash took place in the Windows kernel. Possibly this problem is caused by another driver which cannot be identified at this time.

On Thu 3/10/2011 8:55:11 PM GMT your computer crashed
crash dump file: C:\windows\Minidump\031011-50809-01.dmp
This was probably caused by the following module: ntoskrnl.exe (nt+0x71F00)
Bugcheck code: 0x3B (0xC0000005, 0xFFFFF800037CC1A3, 0xFFFFF8800C749FD0, 0x0)
Error: SYSTEM_SERVICE_EXCEPTION
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 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.
The crash took place in the Windows kernel. Possibly this problem is caused by another driver which cannot be identified at this time.

On Thu 3/10/2011 8:08:22 PM GMT your computer crashed
crash dump file: C:\windows\Minidump\031011-20170-01.dmp
This was probably caused by the following module: cdd.dll (cdd+0x576C)
Bugcheck code: 0x1000007E (0xFFFFFFFFC000001D, 0xFFFFF960006B576C, 0xFFFFF8800236B778, 0xFFFFF8800236AFD0)
Error: SYSTEM_THREAD_EXCEPTION_NOT_HANDLED_M
file path: C:\windows\system32\cdd.dll
product: Microsoft® Windows® Operating System
company: Microsoft Corporation
description: Canonical Display Driver
Bug check description: This indicates that a system thread generated an exception which the error handler did not catch.
This appears to be a typical software driver bug and is not likely to be caused by a hardware problem.
The crash took place in a standard Microsoft module. Your system configuration may be incorrect. Possibly this problem is caused by another driver on your system which cannot be identified at this time.

Merci d'avance pour ceux qui me répondront .
Bonne journée