What symptom is the computer hard drive broken?

Hard disk failure is divided into two types of physical and soft faults, its diagnosis is based on the system after the phenomenon of electricity and the screen appears on the message to judge. When the hard disk failure, should carefully analyze the phenomenon of fault, whether it is a soft fault or physical device damage. Do not blindly remove the lid, plug the control card or easy to lower the hard drive low-level format, so that the problem becomes more complicated. Sometimes due to improper maintenance operations, not only failed to repair good, but caused a new fault.

1, hard disk physical failure of the common physical failure of the following several phenomena:

① hard drive circuit failure spindle motor stall, causing howling, accompanied by a hard drive indicator light constantly flashing, self-test error message: "1701" or "Hard disk error" This shows that the hard drive control circuit part of the fault. Hard disk circuit Fault in the hard disk fault statistics accounted for a small proportion, is generally exposed to the self-test process, and the fault phenomenon is relatively single. The failure of the read and write control circuitry occurs at the same time, with little or no read (not written) or only (unreadable) phenomena.

② hard disk cavity failure machine power, hard disk cavity abnormal sound, self-test process has obvious "Da Da" long time Head "crash" sound, the hard disk cavity body has mechanical failure. This is mostly the magnetic head stepping strip loose or broken, the fault is caused by serious impact or vibration of the disk body.

③ hard disk adapter or connector failure system power self-test to the hard disk subsystem, self-test can not pass, and the hard drive indicator light is not bright at the same time the screen shows the following information: "1701,hard Disk Error" or "HDD Controller error" This symptom is not a hardware failure of the hard disk subsystem if it is not the master boot record of the hard disk. For example, a hard disk adapter card, hard drive corruption, or bad or poor contact between the hard disk adapter and the motherboard ⅰ/o slot and the connectors and cable connected to the hard drive.

④ hard Disk 0 cylinder damaged hard drive after a long time self-test, displayed at boot: "Disk boot failure TRACK 0 Bad" If this immediately freezes to cause boot failure, may be disk 0 cylinder damage. The result is a hard drive master boot sector, or a DOS boot sector that is corrupted so that the hard drive is not available. Although this fault belongs to the category of physical fault, it can be repaired by software method.

2, hard disk soft fault meaning refers to the hard disk on some important and have special significance of data loss, damage or modification of the bootstrap boot failure or read and write failure. This is the main content of hard disk soft fault, because the vast majority of the disk in the System Information area, the county plate in a large number of files or data has not been lost, it is particularly important to exclude such soft faults. Most of the reasons why the hard disk can not be bootstrap are due to the damage of information in the system area, the loss of CMOS parameters or virus intrusion. In general, users can determine the cause of the failure based on the prompts that appear on the screen.

These reasons can be divided into: CMOS data parameter loss, hard drive master boot area damage, hard drive DOS boot area error (including DOS three system files damaged or lost) three kinds.

The following description of the three types of failure phenomenon, causes and treatment methods:

① If this error occurs on the screen after the boot, the loss of CMOS content is caused by the damage of the battery on the system board to maintain the CMOS information. For this kind of failure, just replace the battery, reset the CMOS parameters (especially the hard disk type parameters and three basic logic format parameters), you can start from the hard drive normal.

② when the system starts, the following message appears on the screen: "Invalid drive Specification Invalid partition table" prompts the message "Deviceerror" information, typically the hard drive master boot zone log error. The causes of such errors may be: The primary boot partition is not specified as an active partition (no bootstrap flag), several partitions have no bootstrap flag or multiple bootstrap flags, the master boot Record End flag (55AA) is missing, and the master boot record is damaged by user accidental manipulation or virus intrusion.

③ The following message appears on the screen when the system starts: "Error load operation system Missing operation system Non-system disk or disk Error disk book FA Ilure "This type of error message is typically caused by a DOS boot sector error. During the boot process of the system, when the main boot partition of the hard disk is checked correctly, the boot sector of DOS system is read according to the partition starting address indicated in the bootstrap partition, and if the read operation fails, the error information of "Error load operation system" is given; if you can read the DOS boot sector correctly, The system checks to see if the last two bytes of the boot sector are valid flags "55AA", and if not, gives an error message for "Missing operation system"; if the suppressed filename information in the DOS boot sector is corrupted, Or the first two filenames read by the bootstrapper from the start sector of the root directory of the disk are not two system implied files of the current DOS version, and the error message "Non-system disk or disk error" is given; if the DOS boot sector record format or system files are corrupted for some reason, A read operation error occurred while reading memory by the bootstrapper, giving an error message for "Disk book failure". For troubleshooting this type of failure, you can use the DOS command "SYS C:", or PCTools, Norton, and other tool software to fix it.