video problem, need BIOS keystrokes to fix

I have an IBM aptiva 2270. The onboard video connection is
malfunctioning such that nothing can be displayed. I would like to
install a PCI video card to use instead, but the only way to disable the
onboard video is to get into the BIOS, which I can't see right now
because the video doesn't work.

I know I can get into the BIOS by holding down the F1 key when the
system starts up. I'm wondering if anyone has an identical system, and
could provide an exact list of keystrokes (and/or screen shots) that
would be used to navigate the BIOS to disable the onboard video and save
the changes.

If you can help, please reply to this post, or send email to
(remove NOSPAM).

Thanks in advance.

Scott Tindal