ipod won't go into disk mode

for the last week and a half my ipod has not been able to start, everytime i turn it on i get the apple logo then the big red x that tells me to contact ipod support. i've restarted it a thousand times, made sure it was charged and when i plug it into the computer it doesn't register that the ipod is plugged in. when i tried to get the ipod into disk mode, it continued to give me the red x. is there a way to fix this? is my ipod killed for good?