Boot Issue with ClusterKnoppix

I'm using ClusterKnoppix , and one of the computers i have seems to have compatibility issue. When i boot off the CD, the first screen, which displays "ClusterKnoppix" is very "choppy", for lack of a better word. The screen can barely be read, because it is very distoreted. The OS continues to boot, and when i get to the "Bright Blue Desktop Screen", this is also very distorted, and nothing can be read. the OS wont boot any farther and just hangs there. Has anyone had similar problems?? If you would like me to explain my issue better, please just ask. thanks for any help you can give.