Adding my two cents again: If you get only blank MFDs when switching the master modes, that is not a bug but a feature, you´ll need to programm your prefered MFD setups in the DCU for the Modes. Just like the EWS programms, you´ll just need to do it once. Click on the DCU symbol right of the map, the second one from below to programm it. If your EWS system doesn´t work, that is because you haven´t set up the EWS programs. BMS runs rock solid on my Wind 7 64 also. Awesome, all of that sounds pretty complicated but in the end it´s not complicated at all.
What Comes before a Good simulator landing? The Bad ones!^^
If you keep your humor, you will make it through the darkest of valleys.