Typically, hard disk drives are pretty silent hardware components. I mean, of course you can hear them, but the normal sounds they make are not too powerful and they appear under heavy workloads. Or so it is supposed to be, as there are some older drives that make a lot of noise when running at full capacity.
Occasionally, users may hear knocking or clicking sounds coming out from the hard disk drive in the form of a rhythmic sound that starts and stops at random time intervals. Most of the time the sound you hear is the first sign that your hard disk is getting old and it might quit on you rather sooner than later. This can happen when powering up your computer or working halfway on your computer and as a precaution measure you should back up all your important data.
If the sound you hear is more like a grinding sound than a nice clicking one, then I’m so sorry for your hard disk drive, as the heads just decided to scratch a little the data surfaces. This however, would be the worst case scenario, besides having the logic chips fried by an overvoltage, as the data can only be recovered in a specialized lab. Mechanical faults are quite common and they represent a physical damage and these sounds can be caused by a malfunctioning spindle, Read Write head or loose components. Backup your data immediately if you are still able to access data on the disk. Your disk is near the end of its life and will stop functioning anytime. If your disk stops spinning after a period of clicking sound, you may wish to send your disk to a reputable data recovery firm to recover your data.
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