Chazar,

You seem to have solved your problem (though the solution does seem a bit drastic), but I thought I'd chip in anyway.

I run Dom2 on a Windows based tablet PC when away from home, and when Dom2 is running I do notice that none of the power-management options work (screen blanking, auto-suspend, as well as low-battery warnings). This seems to be the case even when running in Windowed mode.

It is slightly bizarre.