How to Fix Corrupt Powerpoint
A Powerpoint file can become corrupted or unreadable for any number of reasons. The first step in fixing one is to determine the problem. Microsoft provides a variety of solutions, though you may have to try a few before you hit on the correct fix for your particular issue.
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Instructions
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Open the PowerPoint file and see what error message pops up. If it is vague or unclear, do a Google search of the exact phrase (put it in quotes) to see what it means.
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Ask whoever you received the file from to send it again if you got it this way. If you got it from a website, download it again. If it is password-protected, ask for the password or ask them to re-save it without a password.
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Be sure that you have the latest version of PowerPoint. If you are trying to open a newer file on an older version of the software, you may run into problems.
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Try to recover some or all of the corrupted slides. To do so, open a blank Powerpoint document and select "Slides from Files" from the "Insert" menu. Navigate to your corrupted file and select "Insert All." This may recover the old file in this new document, which you can then save.
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Open the corrupted Powerpoint in Microsoft Word. While this is not the most elegant solution, it will often recover some or all of the data or at least let you view the error in more detail.
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Move the corrupted file onto a different storage unit. For instance, if you are reading it off a USB flash drive, put it on your hard drive and try opening it from there.
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Contact Microsoft with the specifics of your error message and what you know of the file's contents if all else fails.
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Tips & Warnings
Recovering a corrupted Powerpoint is never a sure thing. If the download was interrupted, for instance, there is nothing that can be done to recover data that simply isn't there. Always see if you can get another copy of the Powerpoint from the original source. This will fix many problems.
