About 2 years ago I purchased a brand-new Western-Digital 120GB, IDE, 8MB Buffer, 7200RPM, hard-drive. Lately I've been noticing that a few seconds into powering-up my system, I can hear a high-pitch ringing from my hard-drive. I tried applying pressure to all sides to stop internal vibrations... nothing worked. What can be the problem and how do I fix this? Thanks.