 In this video, I will show you what to do if your hard disk stops, phrases, malfunctions or cannot be seen in bias. If the disk is pretty old, examine the circuit board visually, and if you see any corroded contacts, the following method is very likely to help you. First of all, you need to remove the circuit board, turn the board upside down. To remove this substance, take a rubber and do some careful cleaning moves. If it doesn't help, take some cotton wool and spirit. Another frequent problem with hard disks is getting their magnetic heads stuck. If the disk is not recognized in bias and is not displayed in the device manager, amidst squeaking sounds and you cannot hear the plate as rotating, there must be a problem with stuck magnetic heads.