<HTML><BODY style="word-wrap: break-word; -khtml-nbsp-mode: space; -khtml-line-break: after-white-space; ">I'm afraid there might be a problem with the hard drive on my PBG4 and I'm wondering if anyone has any insights before I call AppleCare. Whenever I pick up the powerbook while it's running I hear a buzzing sound, like something rotating at high speeds is rubbing somewhere. It reminds me of the sound made by a grinder or a buffer. This sound doesn't not occur when the computer is resting on a flat surface, only when I pick it up. I make an effort now to pick it up carefully with two hands, and the sound depends on how I hold it, but I pretty much get it every time I move it. The computer is a year old, under AppleCare, with an Apple installed hard drive. There are no other issues and I'm pretty good about backing everything up to an external drive and to .mac. I'd hate to be without a computer if Apple wanted me to send it in. Or maybe it's too ambiguous a problem to get any help from Apple. But I'd hate to have my HD crash on me, and the sound is annoying. <DIV><BR class="khtml-block-placeholder"></DIV><DIV>Jim</DIV><BR><BR><DIV> <SPAN class="Apple-style-span" style="border-collapse: separate; border-spacing: 0px 0px; color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; text-align: auto; -khtml-text-decorations-in-effect: none; text-indent: 0px; -apple-text-size-adjust: auto; text-transform: none; orphans: 2; white-space: normal; widows: 2; word-spacing: 0px; "><SPAN class="Apple-style-span" style="border-collapse: separate; border-spacing: 0px 0px; color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; text-align: auto; -khtml-text-decorations-in-effect: none; text-indent: 0px; -apple-text-size-adjust: auto; text-transform: none; orphans: 2; white-space: normal; widows: 2; word-spacing: 0px; "><P style="margin: 0.0px 0.0px 0.0px 0.0px; font: 12.0px Helvetica; min-height: 14.0px"><BR></P><P style="margin: 0.0px 0.0px 0.0px 0.0px"><FONT face="Helvetica" size="3" style="font: 12.0px Helvetica">Powerbook G4 12" 1.33 GHz</FONT></P><P style="margin: 0.0px 0.0px 0.0px 0.0px"><FONT face="Helvetica" size="3" style="font: 12.0px Helvetica">OS X 10.4.2</FONT></P><P style="margin: 0.0px 0.0px 0.0px 0.0px"><FONT face="Helvetica" size="3" style="font: 12.0px Helvetica">768 MB Ram</FONT></P><P style="margin: 0.0px 0.0px 0.0px 0.0px"><FONT face="Helvetica" size="3" style="font: 12.0px Helvetica">80 Gig HD</FONT></P><BR class="Apple-interchange-newline"></SPAN></SPAN> </DIV><BR></BODY></HTML>