The drive itself rattles or the CD rattles within the tray? A rattling CD is often due to an unbalanced CD (a poorly made label or somesuch). If the drive itself rattles it can be the result of a loose mounting rail. If it's the latter, you can try removing your drive and checking to see if the rails are snug. If not, remove the drive completely and either tighten the screws or, failing that, try to get some new rails. Of course, this *is* Compaq we're talking about I dunno if any of that could be of help to you. Good luck.