How do i recover my lost data from my hard disk which lost due to a power failure

How do i recover my lost data from my hard disk which lost due to a power failure
Sudden power failure damage to the computer is great, especially the hard disk.
Data loss is a common problem.
However, as long as the hard disk can be identified, the possibility of data recovery is very high.

Use “Undelete” to recover deleted files data from hard disk which lost due to a power failure

Use “Recover partition” to recover files data from hard disk which lost due to a power failure if partitions changed or damaged or deleted.

Use “Full Scan” mode to recover files data from hard disk which lost due to a power failure which can not be found with “undelete” and “recover partition”,show as raw partition,partitons which are not NTFS,nor exfat,nor fat32. With deep and full scan