How to Fix Damaged Hard Disk

In layman may be difficult to fix, but technically the damaged hard drive can be repaired, depending on the level of damage.

4 levels, is based on research and my own experience over the handling damage to the hard disk.

Level 1 
Damage that occurred at this level usually caused Bad sectors. To handle this there are several ways and experimental variation, adapted to the hard drive brand and the number of bad sectors.
* For the initial handler can use the command FORMAT C: / C (adjust the drive which will be formatted). / C is used to clean up the cluster which is broken.
* The second step, if not managed can use the Disk Manager program from each hard drive manufacturer.
* If not successful you also can use the software HDDREG, please download on the internet program.
* If not successful try the Low Level Format or Zero Files.
* If you still can not, you can do cutting damaged sector of hard disks which, by dividing it and not use a damaged sector.

Level 2 
The damage at level 2 is Losing Hard Disk Partitioning and Data. This could be caused by a virus or error using utility programs. One is to be considered in hard drive partition to restore the lost, the hard drive capacity and type of file system. Partition with a FAT File System is more easily restored than NTFS or Linux File System.
* Check the first hard disk partition by using FDISK or Disk Manager 
* To restore it can use software such as Acronis Disk Director, Handy Recovery, Stellar Phoniex etc.

Level 3 
Erosive damage to the hard drive detected in BIOS but can not be used, always an error message appears when the computer do the POST. This is usually caused FIRMWARE troubled from the hard disk. For these symptoms are more common in Maxtor brand hard drive series with the names of Gods. To fix it you can download the firmware program from the hard drive brand website.

Level 4 
The damage that causes the hard drive is not correctly detected by BIOS and can not be used again. This is the hardest level in my opinion. Due to the repairs we need a little tweaking tooling electronic devices and components inside. Menganggulangi hard drive is not detected by the BIOS in many ways.
* Check electrical current which flows into the hard drive 
* Changing the IC on the mainboard Harddisk 
* Open the Cover Cover hard disk drive and check the position of Head
 * How to reply Extreme damaged hard drive which can be cannibals with the others who harden your hard drive is different, can be a way to replace the mainboard or take her IC.
 
Hopefully this could be an additional reference for you who want to try to repair the hard drive. Good luck