You can't adjust the speed of the HD from windows. Hard drive speed is a voltage/amperage specific fixed hardware protocol and defined by the hd's board. If you could mess with it then the out come would be this: smoke......buy a new drive. Hard drives cannot be "oc'd".
Forget about it. There have been over spin viruses in the past. I'm not sure how they worked but they caused HD over spins and instant failure!!!
Noli Nothis Permittere Te Terere!!
EVGA 680i, Dual EVGA 8800GT'S (650/950), 4 gigs OCZ DDR2 1066, Intel Q9450 at 3.8 Ghz, Koolance Water Cooled, Dual Plextor16x DL DVD+/-RW. Dual WD 250gb 16mb Cache Sata 3.0. 3DMark06 score = 19,168.