Board: BIOSTAR Group N68S3+
on board video
NVIDIA GeForce 7025 / NVIDIA nForce 630a [Display adapter]
LG L1980U [Monitor] (19.1"vis, s/n 6364, March 2005)

trying to install along side Windows XP from USB
the graphics screen never works - it has come up scrambled, or if I wait patiently it will apparently make several attempts about 3 different drivers - but ends up with the original standard blank screen.

when I installed Ubuntu 11.10, on a different hard drive, I had to "fix" the graphics drivers. but how do I fix my drivers when I cannot read the screen?

would my best answer simply be to procure a video card? (and if so, suggestions solicited) but my first choice would be to simply make my present hardware work.

what I want MOST is to understand what is happening to me in this process, and any enlightenment appreciated.