When the MX-4000 is installed, there's no video output on either of both output points; the MX and the built-in S3 Graphics.
But the funny thing is that when I connect the monitor cable to the MX (When installed) the monitor says the cable is disconnected, but when I swap to the built-in graphics card the monitor gets dark and the green light of it shines like on "stand by" state.
Well, that's all for now.
Thanks in advance