Hello Luidig, it is caused by the display driver.
Code:
fffff880`0a6cc2a8 fffff880`04cf1821Unable to load image \SystemRoot\system32\DRIVERS\atikmdag.sys, Win32 error 0n2
*** WARNING: Unable to verify timestamp for atikmdag.sys
*** ERROR: Module load completed but symbols could not be loaded for atikmdag.sys
atikmdag+0x3c821
============================
lmvm atikmpag
start end module name
fffff880`048c5000 fffff880`0493b000 atikmpag (deferred)
Image path: \SystemRoot\system32\DRIVERS\atikmpag.sys
Image name: atikmpag.sys
Timestamp: Thu Aug 16 06:43:06 2012 (502C4922)
CheckSum: 00079744
ImageSize: 00076000
Translations: 0000.04b0 0000.04e4 0409.04b0 0409.04e4 Update it from
AMD Graphics Drivers & Software
Let us know the results.