ManThatYouFear

When I first tried to run the CM demo it turned my monitor off, as if it were changing res/colour settings, but then when it turned it back on it made this horrible screeching noise, the familiar noise of a monitor about to blow. Luckily I turned it off before any damage was done. I'm using an ATI Rage IIc, 2 voodoo2s SLI'd together and a generic monitor. Has anyone else run into a problem like this? Anyone know how to avoid it? fix it? anything? Any info would be appreciated. Thanks, Derek