I've used OpenLP for a very long time to display bible verses and song lyrics with no problem. I recently upgraded to Windows 7 64 bit and that's when the problems started. Here's a summary of the system:
HP Desktop I5 with 8GB RAM.
NVidia GeForce 9500GS (Running the latest NVidia drivers)
Dual Monitors - One VGA, One HDMI (Both work fine)
Various other components, drives, etc., but nothing special.
Any feedback appreciated.