Kotor and TSL do not play nicely with integrated graphics cards.
Check this thread on a solution to playing with an integrated Intel card (clicky)
Also, check out this thread (clicky)
in The Workbench section in the Star Wars Knights forum. You may find some more help. If you post your full specs there (or here) as described in the 'read this before posting' thread, it'll give the tech-savvy people some better information that may pin down the problem for you.