According to Google, the "DirMngr" service is a service which handles security certificates, so that doesn't sound like anything to worry about it particular.
This one, though, definitely does matter:
Quote:
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"L'ordinateur a redémarré après une vérification d'erreur. La vérification d'erreur était*: 0x1000008e (0xc0000005, 0xbf813017, 0xa9573878, 0x00000000). Un vidage a été enregistré dans*: C:\WINDOWS\Minidump\Mini052409-01.dmp.
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A common cause of mysterious reboots is faulty RAM. All is well until the system tries to write to the particular address and then, when it does, you get an error and a spontaneous reboot.
Do you have any small computer stores in your vicinity who could do a thorough test of your PC for you? That's probably the best bet. From your description, it sounds like a hardware error.