The files can be deleted in two different ways i.e. one is by pressing Shift + Delete keys and another deleting through the command prompt. On Windows systems, when the file is deleted using Windows Explorer, it has generally moved to the Windows Recycle Bin. Afterward, if you desire to get back those files then you can restore them from Recycle Bin. Recycle Bin stores files and folders, which are marked for deletion. But, when the files are deleted using Shift + Delete keys, they are not moved to Recycle Bin instead they bypass the Recycle Bin. If you have accidentally deleted the Excel files using Shift + Delete keys then you cannot restore them from Recycle Bin and this particular situation may result in a loss of important files. If you want to recover files on Windows, then you must make use of a relevant file recovery software.
Usually, once you delete a file, the Operating system does not actually remove the file from hard drive. The operating system simply marks the file name in file allocation table with a special character, which informs the processor that the file has been deleted. In fact, Operating system substitutes the first letter of deleted files with hex bytecode that is E5h that identifies that the file has been deleted. Every so often, you may unintentionally empty the Recycle Bin is leading to a loss of files. Normally, hard drive stores files in a non-contiguous way. For example, in case you are storing large file where the file is not stored in contiguous locations instead it stores that file in free available locations even though they are widely separated on the hard disk. When the file is fragmented in this way, hard drive takes more time to access each individual part of the file for use. Therefore, you need to defragment the disk in order to improve the performance. While defragmenting, if a sudden power failure occurs or if you accidentally turn off your computer then files may get lost.
At all times, take a backup before defragmenting your hard disk to prevent the loss of files. Usually, when the files are deleted, file system marks that space as available for storing new files. Therefore, when you save or copy any new files over an affected hard drive may overwrite the old files resulting in permanent loss of files beyond the recovery. In case you have accidentally deleted some important Excel sheets and you have not taken a proper back up of Excel files then you must make use of an appropriate file recovery tool to recover Office files from a hard drive.
The file recovery software restores files that are unintentionally deleted or lost from the hard drive. This software works on different types of hard drives like SATA, SCSI and IDE produced by various manufacturers like Seagate, Western Digital, Samsung, Hitachi etc. This software works for recovery of files from various kinds of file systems like FAT16, FAT32, NTFS, NTFS5 and ExFAT. You can also download demo tool from the internet, which allows you to view a list of recovered files. Afterward, you need to purchase complete version software in order to save the recovered files on any available drives.