On a hard disk drive, the click of death refers to a similar phenomenon, generally a read/write error during a seek. If the hard disk has a hard error (a hardware failure that cannot be undone by rebooting), or servomechanism failure, the head actuator will buzz and click as the drive tries to recalibrate to recover from the error. In most cases, the defect is due to physical abuse or a manufacturing error. The cause of the read/write errors is often due to the failure of the read/write heads' preamplifier, a small chip usually found soldered to the flexible cable on the actuator of modern hard drives.