blue screen

Bonjour
J'ai un portable Toshiba et il me plante en ce moment une fois par jour: je crise car j'ai beaucoup de travail.
J'ai vérifié les pilotes de mes deux cartes réseau et ils sont à jour.
J'ai aussi Word et excel qui plantent..

voici le rapport Whocrashed des derniers plantages:

System Information (local)
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computer name: PC-DE-CLOTILDE
windows version: Windows Vista Service Pack 2, 6.0, build: 6002
windows dir: C:\Windows
Hardware: Satellite P200, TOSHIBA, ISRAA
CPU: GenuineIntel Intel(R) Pentium(R) Dual CPU T2330 @ 1.60GHz Intel586, level: 6
2 logical processors, active mask: 3
RAM: 2136670208 total
VM: 2147352576, free: 1927811072




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Crash Dump Analysis
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Crash dump directory: C:\Windows\Minidump

Crash dumps are enabled on your computer.

On Sun 23/03/2014 08:09:21 GMT your computer crashed
crash dump file: C:\Windows\Minidump\Mini032314-01.dmp
This was probably caused by the following module: Unknown (0xFFFFFFFF82EEA9BD)
Bugcheck code: 0xC2 (0x7, 0x110B, 0x80D0015, 0xFFFFFFFF885995B0)
Error: BAD_POOL_CALLER
Bug check description: This indicates that the current thread is making a bad pool request.
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.
Google query: BAD_POOL_CALLER



On Sun 23/03/2014 08:09:21 GMT your computer crashed
crash dump file: C:\Windows\memory.dmp
This was probably caused by the following module: Unknown (0xFFFFFFFF82EEA9BD)
Bugcheck code: 0xC2 (0x7, 0x110B, 0x80D0015, 0xFFFFFFFF885995B0)
Error: BAD_POOL_CALLER
Bug check description: This indicates that the current thread is making a bad pool request.
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.
Google query: BAD_POOL_CALLER



On Sat 22/03/2014 15:05:33 GMT your computer crashed
crash dump file: C:\Windows\Minidump\Mini032214-01.dmp
This was probably caused by the following module: ntkrnlpa.exe (nt+0xCD9BD)
Bugcheck code: 0x9F (0x3, 0xFFFFFFFF85DDA030, 0xFFFFFFFF86E4A380, 0xFFFFFFFF85CF8DA0)
Error: DRIVER_POWER_STATE_FAILURE
file path: C:\Windows\system32\ntkrnlpa.exe
product: Microsoft® Windows® Operating System
company: Microsoft Corporation
description: NT Kernel & System
Bug check description: This bug check indicates that the driver is in an inconsistent or invalid power state.
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.