What is your answer to the question? If it's a (fairly) new drive, then it's maybe time to check the cable or IDE-port. Do you hook it up to it's own IDE-port or is it shared (on a single cable from a single port) with a CD-ROM, ZIP, HD etc? Also, check the jumper settings, is it set to master/slave? You'll be suprised how many people set two master disks on one cable.