noblues,
as a computer neanderthal, I don't understand much of the terminology of your post.
However I am having a similar problem with my PIII HP, running Windows XP Pro.
The damn thing locks up if I 'drive' the mouse too quickly. The touchpad and all keyboard keys don't respond to any inputs. The only way to resurrect the machine is to close the lid (hibernate) and then wake it, or shut it down and restart.
Through trial and error I've found that if I don't have Windows Media Player open, I don't have the problem!
I wonder if there's any common thread in our problems?
