jltefft,

The best I can offer is to:
1. Update the BIOS
2. Update the driver - specifically download and install it from the website.
3. Make sure your overscan settings on the video card are set to 0.

If you turn off the computer, leave the TV in PC mode and restart it, and are able to see the splash screen, then it's definitely a setting in the video card.

--HDTech