|Yeah, clicking can be a sign of a failing hard drive, if the clicking is coming from the drive. First open the case and see if you can tell exactly where it's coming from. Make sure no wires or cables are brushing against the cooling fan blades and causing the noise.|
Make sure the hard drive data cable is in good condition and tightly connected as a problem there may make the bios think the drive is failing.
If you still have the problem, download a diagnostic utility from the drive manufacturer.
Real men don't use AntiVirus; they just reformat