The godawful high-pitch tone that emits for months before my hard drive crashes and has to be replaced yet again. This will be the 3rd time in the lifespan of my present PC. (I'm not going to replace the PC till I understand this problem so I don't end up purchasing the problem anew when it's time to replace this entire PC.)
a hard-disk failure occurs when a hard disk drive malfunctions and the stored information cannot be accessed with a properly configured computer. A disk failure may occur in the course of normal operation, or due to an external factor such as exposure to fire or water or high magnetic waves, or suffering a sharp impact or environmental contamination, which can lead to a head crash.