Open Windows Explorer and select the drive:\Program Files\Microsoft Office\OFFICE14 folder.
In the Enter the name of the file you want to scan box, enter the name of the .pst or .ost file that you want to check, or click Browse to select the file.
To specify the scan log options, click Options, and then click the option that you want.
If errors are found, you are prompted to start the repair process to fix the errors.
A backup file is created during the repair process. To change the default name or location of this backup file, in the Enter name of backup file box, enter a new name, or click Browse to select the file that you want to use.
Start Outlook with the profile that contains the .pst file that you tried to repair.
In the Navigation Pane, click Folder List.
Keyboard shortcut To open switch to the Folder List, press CTRL+6.
In the Folder List, you might see a folder named Recovered Personal Folders that contains your default Outlook folders or a Lost and Found folder. The recovered folders are usually empty, because this is a rebuilt .pst file. The Lost and Found folder contains the folders and items recovered by the Inbox Repair tool.
You can create an Outlook Data File (.pst), and drag the items in the Lost and Found folder into the new data file. When you have finished moving all the items, you can remove the Recovered Personal Folders (.pst) file, including the Lost and Found folder, from your profile.
Restore from the backup. You create backup to prevent the situation of data loss due to corruption or accidentally deletion. If you have backed up the PowerPoint files, you can restore them from the backup. But if not, then
Use Data migration. It is one of the easiest ways to recover data from a corrupt file. First you need to create a new presentation file. Then by using the Insert menu, you can import all the slides from a corrupt file to this new file. But sometimes this could be ineffective or failed due to severe corruption. If this happens, you can try the next one
Use TMP files. Whenever a file gets corrupted or deleted, there is a temporary aka TMP file available in the system. You need to locate it. If the TMP file is successfully located, you can restore the corrupted PowerPoint file. This could be a difficult task for a novice or non-technical users to perform as it may require a lot of technical understanding. Do not be hopeless as one more solution is there
Use MS Word or other programs. You can try to open our corrupt presentation file in MS Word. If the file can be opened, you can recover at least the text part of the file. Other than this, you can also try to open the file in OpenOffice Impress. Unluckily if the files are still unable to be opened, the last and effective solution could be a
Use Professional instrument https://www.repairtoolbox.com/powerpointrepair.html PowerPoint Repair Toolbox