The frequency of the hard disk indicator is related to whether the hard disk is frequently read. If it is always highlighted, it is frequently read. At this time, if you run other programs that need to read the disk, you will feel that the speed is obviously slow. If it is dim, it means that reading frequency is less, and if it is not bright, it is in an idle state. For example, when you just boot into the system, it will be in a long light state, and it will be in an idle state when the background program of the system is loaded. At this time, I will occasionally flash or turn off the lights!