Voila le rapport, mais il a planté minimum une fois par jour, alors que la on a que deux date :
Crash Dump Analysis
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Crash dump directory: C:\WINDOWS\Minidump
Crash dumps are enabled on your computer.
On Wed 25/12/2013 15:13:22 GMT your computer crashed
crash dump file: C:\WINDOWS\Minidump\122513-16156-01.dmp
This was probably caused by the following module: Unknown ()
Bugcheck code: 0x0 (0x0, 0x0, 0x0, 0x0)
Error: CUSTOM_ERROR
A third party driver was identified as the probable root cause of this system error.
Google query: CUSTOM_ERROR
On Wed 25/12/2013 15:12:05 GMT your computer crashed
crash dump file: C:\WINDOWS\memory.dmp
This was probably caused by the following module: taskmgr.sys (Taskmgr+0x74748)
Bugcheck code: 0xEF (0xFFFFE000039006C0, 0x0, 0x0, 0x0)
Error: CRITICAL_PROCESS_DIED
Bug check description: This indicates that a critical system process died.
There is a possibility this problem was caused by a virus or other malware.
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: taskmgr.sys .
Google query: taskmgr.sys CRITICAL_PROCESS_DIED
Merci