Problem with booting and running knoppix

[CrashedAgain]

hello everybody
i've read the FAQ for sure , but i didnt find an answer to my problem .
when i boot the cd , everythin is alright ,then i write KNOPPIX , and i got this error: YOU PASSED AN INDEFINED MODE NUMBER , PRESS enter TO SEE VIDEO MODE AVAILABLE , press SPACE TO continue ,
then , when i press space , knoppix stop in x-server scan , and i dont see any interface , it became blocked, i tried so many cheatcodes to resolve this problem (ii think from the graphic card ) but they dont work, but the failsafe mode works instead , but i cant work on it , plz help me
thanks

What video card do you have.
The 'undefined mode' error is because knoppix is set to default vga=791, booting vga=normal cures it .
But it sounds like it is not setting up for your video card. Try booting xmodule=<whatever your card is>.