1, hard disk normal working condition, the indicator light will have a short period of flashing phenomenon. In layman's terms, when the hard disk performs its task, the magnetic head reads out the data block, converts the position of the magnetic head, and then writes down the data block, that is, in a very short period of time, the continuous intermittent cycle of reading and writing. Under the control of the monitoring circuit, the indicator light is on, off, flashing speed fast or slow, all correspond to the hard disk work status.
2. At some point, there will also be a light always on phenomenon, but at this time the hard disk does not have any problem. That's because it's processing a large data stream. But this often light performance, will only appear in the operation of the task within the time period, outside the paragraph it will be out of the light to rest. Understanding the principle of the light, light on and off law, you can always determine the health of the hard disk.
3, when the boot, the light is always on more than the phenomenon at the same time, the user will also find that this time the book is running very slowly, and even the blue face black face situation, suggesting that the hard disk error to Check it, and after that will be used to Chkdsk to give a screen full of white letters. If every boot is this phenomenon, quickly backup important data files, and then overhaul the hard disk.
4, the reason is that the hard disk platters appear "bad track" block. There are two kinds of bad blocks, one is logical damage, mostly caused by illegal shutdown or power loss; the other is hard physical damage, that is, the disk surface media damage, such as violent vibration, drop touch, often power loss, etc., but also product quality problems caused by the damage phenomenon.
5, logical damage failure, the system will use Chkdsk repair. In serious cases, it can be low-level formatting. Physical damage, it is much more laborious, to isolate the bad block, no longer use it to save the life of the hard disk. Specific repairs are not described.
6, the computer has file poisoning, it is recommended to use the relevant antivirus software for active protection and full disk scanning to remove viruses and Trojans.