hope someone can help?

can i boot a disc in single user mode?

i have numerous problems on my imac G4 for starters the mouse does not work
when i hold down control C nothing works and i have also tried holding c down on it's own i think the main problem is the hard drive when opening itunes for example i can't seem to play any music same with video's etc

i can only eject disc's in start up mode whilst holding down eject button.

i have recently brought Norton Ultilities and would like to run it onto the system but it doesn't work. or maybe disc ultilities on Mac OS X install disc 1

i would very much like to identify the problem on the system is there anyway of doing this in single user mode??

many thanks for reading