biostar m7vig400 with a sempron 2800. That's the message i get whenever i try to use the vga onboard while having the agp video card plugged in and when i take it out and boot up the computer it says that...have no idea why
Just a guess, but I believe the on-board video uses the AGP bus. With AGP, you can't share it between two video cards. I bet if you go into BIOS and disable the on-board video, you'll be alright.