there is sound like "tik tik"from harddisk.what should i do?plz help me

tik tik from hard disk hmmm.not a problem- can be solved dear-It is the hard disk giving problem, fist of all do these---- take out te hard disk cable and replug it inot hard disk and motehrboard board ,also change the power input wire of hard disk, the supply has many spare ones.if still it does not solve then you have to format hard disk, and install OS agaiun. If it is not still done, please revert back to us. Cheers