The disk is not detected in the BIOS or is detected incorrectly, while the hard drive can make uncharacteristic sounds or pound. HDD can also be detected correctly, but user data is not available, the system can not boot from this hard drive.
Restoring files from the hard disk, in this case, is to restore the data of the HDD service area. These works are held at the PC-3000 stand, in the technological modes of the hard drive. A particular difficulty in data recovery, in such cases, is the destruction of the hard disk defect tables (translator).
After data recovery, it is possible to fix the hard drive.