I can´t start Knoppix 3.4 : errors I/O in hda´sectors.

Hi.


I have the follow problem:

I've started Knoppix 3.4 in my system but it find errors I/O in HDA´sectors. Finally the screen off and I can´t enter to
Knoppix. the only way to enter is when I type "failsafe" cheatcode.

Sombody Knows why pass this? What I do?

Thanks.