pls help

lately my guitar has been makin an horriable noise, its like a buzz
that never happened before
im not sure but i think it could b because my cable isnt good

do u think i should get a new one??

i have another question

could it damage my guitar if i turn all the voulume up?? (on guitar)
Is the noise coming from the amp when no strings are being played, or when you push down on a fret and play?

'Cos on my crappy amp I get a sort of buzzing when my guitar is plugged in, amp is on, and nothing is happening.
Your friendship is a fog, that disappears when the wind re-directs (YEAH!)
if your cable sucks, the sound is either on all the time or when the cable bends a certain way
Epiphone G-400 Ebony
Line-6 UberMetal, EchoPark
Boss RC-2 Loop Station
Traynor YCV50Blue, Bass Mate 25, Guitar Mate 15