My bro had a boot problem with his Windows - Memory Full. So I got may Knoppix and put it in the CD. Everything worked except the screen size. Boot font was large. Only a large font choice in the gui. He fried his graphics card. Only three years usage on the original card. Added a new graphics card. (me dummy - I thought he had a AGP slot. It's a PCI )
It worked. Knoppix is a great great tool!