Sound card not working ...............

there is no sound in my computer...
When i get into the sndconfig it says....

you don't seem to be running a kernel with modular sound enabled. │
│ (soundcore.o was not found in the module search path). │
│ To use sndconfig, you must be running a kernel with modular │
│ sound, such as the kernel shipped with Debian GNU/Linux or a 2.2 │
│ kernel, and sound must be compiled as modules. │
│
What is the problem....
I am using knoppix 5.1 ...
It is the latest...and when i installed it the sound was working but now there occured some problem
plzzzzzzzzzzzz help

Try opening a terminal and type

modprobe soundcore

does the module load and do you have sound?
What kernel are you running and what soundcard do you use?