Hard Drive clicking and whining randomly but it's not the drive
I've tried what I know to try so I am turning to the experts. I have a built computer runing with the following components:
Core 2 Duo
2 x 750GB SATA
1 x 1 TB SATA
2 x IDE DVD Burners
600 Watt Enermax Power Supply
Windows Vista Ultimate x64
I have been experiencing a random click and whine which sounds like an indication of a failing drive. So I replaced all the hard drives in the computer. When the click whine happens the computer freezes for several seconds. After several seconds the computer comes back and runs normal. As stated I replaced the hard drives thinking they were failing but the issue continues. I have also replaced the power supply thinking that maybe it was causing this and the issue continues.
I ran multiple spyware removers and ran full scans with Norton 2009 and the system is clean. I am trying to find out if there is anything else I can check. The only other step I know to take would be to wipe the OS and start over to rule out software issues. My only guess is that this may be caused by AHCI which I enabled in order to use and eSATA external dock. I am trying to avoid losing this functionality as well as having to reinstall everything so I am turning to you all.
What, if anything, can I do short of disabling AHCI to determine if it is the culprit and/or reinstalling the OS?