Posted 10 August 2008 - 06:52 AM
My family has that same model computer. I remember putting a graphics card in it though, and it took it without needing to disable the onboard video. Using Platypuses advice, I went through the BIOS, and maybe I can help you out.
Turn your computer on, and mash the F2 key. Once in the BIOS, press down 7 times and his enter. This will take you to the Integrated Devices (Legacy options). A new box will come up, even though you won't be able to see it, and you need to go down 9 times. This will take you to the onboard video section. Mine was automatically set as AUTO, but yours might be set as Onboard. After you press down 9 times, press right or left once, it doesn't matter which one. Then hit Esc twice and then enter. The first one closes the new box you opened, and the second exits the BIOS. After you change a setting, the bios will ask you if you want to save changes and exit when you try to exit. The default choice is save and exit, so you just need to hit enter.
Now I will just label out all the steps without explaining them to make it easier to follow. Hit F2 a few times immediately after turning on the computer. Press down 7 times, and hit enter. Then go down 9 times and press the left or right arrow key once. Hit Esc twice and then enter.
In the link Platypus sent, you would only need to press down 6 times instead of 7. I don't know if that's an older BIOS revision of the board, because mine had another option with something to do with hard drives between boot sequence and drive configuration. The computer we have is 4 and a half years old and never once updated the BIOS. It has BIOS Revision A03. I don't know if you'll be able to find if you have the same one or not though without being able to use a monitor.
"I think there is a world market for maybe five computers." - Thomas Watson, Chairman of IBM, 1943