Salut, maintenant j'ai un nouveau message : System_service_exception ...
Voila ce que WhoCrashed m'indique ... Que faire ? :

Crash dump directory: C:\Windows\Minidump

Crash dumps are enabled on your computer.

On Fri 09/01/2015 14:41:42 GMT your computer crashed
crash dump file: C:\Windows\Minidump\010915-21637-01.dmp
This was probably caused by the following module: ntoskrnl.exe (nt+0x75BC0)
Bugcheck code: 0x3B (0xC0000005, 0x1, 0xFFFFF880055C6F30, 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 that cannot be identified at this time.

On Fri 09/01/2015 14:41:42 GMT your computer crashed
crash dump file: C:\Windows\memory.dmp
This was probably caused by the following module: avkmgr.sys (avkmgr+0x12CE)
Bugcheck code: 0x3B (0xC0000005, 0x1, 0xFFFFF880055C6F30, 0x0)
Error: SYSTEM_SERVICE_EXCEPTION
file path: C:\Windows\system32\drivers\avkmgr.sys
product: Avira Product Family
company: Avira Operations GmbH & Co. KG
description: Avira Manager Driver
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: avkmgr.sys (Avira Manager Driver, Avira Operations GmbH & Co. KG).
Google query: Avira Operations GmbH & Co. KG SYSTEM_SERVICE_EXCEPTION

On Thu 08/01/2015 12:21:14 GMT your computer crashed
crash dump file: C:\Windows\Minidump\010815-14336-01.dmp
This was probably caused by the following module: ntoskrnl.exe (nt+0x75BC0)
Bugcheck code: 0x3B (0xC0000096, 0xFFFFF800034E23D6, 0xFFFFF8800B3C7E20, 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 that cannot be identified at this time.

On Thu 08/01/2015 11:27:50 GMT your computer crashed
crash dump file: C:\Windows\Minidump\010815-17066-01.dmp
This was probably caused by the following module: win32k.sys (win32k+0x89097)
Bugcheck code: 0x3B (0xC0000005, 0xFFFFF960000F9097, 0xFFFFF8800AB98E90, 0x0)
Error: SYSTEM_SERVICE_EXCEPTION
file path: C:\Windows\system32\win32k.sys
product: Système d’exploitation Microsoft® Windows®
company: Microsoft Corporation
description: Pilote Win32 multi-utilisateurs
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 a standard Microsoft module. Your system configuration may be incorrect. Possibly this problem is caused by another driver on your system that cannot be identified at this time.

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Conclusion
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4 crash dumps have been found and analyzed. A third party driver has been identified to be causing system crashes on your computer. It is strongly suggested that you check for updates for these drivers on their company websites. Click on the links below to search with Google for updates for these drivers:

avkmgr.sys (Avira Manager Driver, Avira Operations GmbH & Co. KG)

la seul solution pour toi, maintenant et de formater ton pc, tu sauvegarde en mod sans échec et format . ton kernel doit avoir un soucis du a nvidia ..

C'est foutu ... Le PC ne démarre plus du tout ... Il n'arrive plus a booter windows ... Il y a un moyen de formater directement par le bios ? (Et encore, je ne pense pas pouvoir y acceder ...)

Je suis entrain de booter sur les CD de recovery que j'avais fais a l'achat du PC, c'est bien ce qu'il faut faire ?

Edit : Ça ne marche pas, ils demandent le disque de Windows ...

ton pc peut booter par usb ?

Oui que dois-je faire ?

J'ai réussi à booter sous windows, comment reset usine du coup ? J'ai les CD recovery que j'avais gravés a l'achat du PC, à quoi servent-ils ?

Le 10 janvier 2015 à 15:31:35 Petrus77 a écrit :
J'ai réussi à booter sous windows, comment reset usine du coup ? J'ai les CD recovery que j'avais gravés a l'achat du PC, à quoi servent-ils ?

Edit : j'ai rien dit, il s'est etein et ne redémarre plus

Si ton PC s'est éteint et ne redémarre plus, c'est pas un problème système, mais un problème matériel.

J'ai réussi à Réinitialiser aux paramètres d'usine, pour l'instant tout remarche Merci !