That's what I figured about the Hauppage card.
I did try booting with a lower resolution screen. I thought it was something besides 640x480, but anyways, all I got was a bigger cursor on a black screen.
I got into bios with F2
From what I looked at, these items were what I thought pertained to the issue:
PCI info
slot 1 VGA
slot 2 not populated
slot 3 not populated
slot 4 video (I think the Hauppage card)
and Video/
Primary video
set to default "onboard/card"