I've also got a light blue screen only. The last version I had before getting .43 was .35 (kinda fell behind). It worked fine thru ver .35, but now won't run. Did something change? I've tried Ronni's advice with a previous message (deleting video.cfg, etc.) but it does nothing. I don't get the option to choose video cards and there are no better drivers than what I have, I think. I reinstalled ver .35 and it ran fine. Tried .43 - doesn't run. I even completely uninstalled .35 before installing the new version. I have a Diamond Monster Vodoo 2. Any advice?