Xbox 360 slim hard drive problem

Hi I want to determine the cause of the following problem, what happens is this, turn on the console, I can play normally but sometimes being in the game or interface partially frozen and hear the noise when the hard disk read and this noise does not stop at any moment, so I do a forced shutdown,

may be the disc because you hear the noise?

the cause may be bad sectors?

or may be the problem of internal connection of the console?

thanks:)

remove the hard drive, no sound is heard, the problem is hard drive or may be the problem of internal connection of the console? thanks