Hard drive has a problem, in need of repair, first of all what have to do is the hard disk diagnostic. Hard disk has bad track In addition to the quality of the hard disk itself, as well as the aging, usually not be able to treat the hard disk, such as too little memory caused application software frequently visit hard drive, too frequently defragmented, frequent partitions, formatting, improper over clocking, Power quality is not good, the temperature is too high, undesirable dust and vibration. Bad Track is divided into two kinds of logical bad sectors and physical bad sectors, the former for soft bad sectors, usually caused by improper operation or use of the software,
Software repair; the latter is a real physical bad sectors, it shows that the hard disk track generate a physical injury, only by changing the hard disk partition, the use of sector or to hide to resolve.
Here are hard drive diagnostic essentials.
1. Check whether the department have power supply
2. Connection (Cable) is connected correctly or not.
3. Check the settings. Disk Select Jumper(Master/Slave)。
4. Check the installation (set up) is correct or not.
5. Check spidle motor is rotating or not.
6. Check whether the head in the initialization process normally
Drive failures are divided into the following categories:
- PCB Fault
- Motor / Bearing Fault
- Kai / stop system failures
- Read / write head failure
- Failure and surface scratches head
- Bad Sector
- Part or all of the firmware data loss.



