Is this a real "tick" or a regular quick read/write opperation? I have an open frame computer so I can hear my HDD quite well. I think all operating systems do regular system updates. Maybe this is just something you notice different than the normal operation of Windows. My HDD when sitting at a bare desktop will will make a very quick "tick" every few seconds. But, I know this is a normal R/W opp.
i5 3570k, ASRock z77 Extreme 4, 8 Gb Ripjaws 1600, Antec 430w psu, HVR 1600 tv tuner, custom case- marble top, oak face. Carver & DCM Time Window sound system. Mint 14 KDE.