pc restart

[joop]

when loading a saved game my pc restarts. in the log file I find the message below:

Enabling Low Fragmentation Heap succeeded
"e:\games\empire\steamapps\common\men of war\mow.exe"
Product: Men Of War - v1.11.3 - standard
Build: 2009.04.03 09:14 - 0x00000000
Total video memory reported: 1858076672
Local video memory detected: 1866323968
Repository: 114345 resources
[00:00:28] Entity redefinition: new_oar (eentityraw.cpp, 43)
[00:00:28] Entity redefinition: mortar120_ammo (eentityraw.cpp, 43)
[00:00:28] Property "manual_targetting/radius_color_by_pierce/show/" is obsolete (/set/interface.set, 36)

Any idea's?