A family of Microsoft presentation graphics products that offer tools for creating presentations and adding graphic effects like multimedia objects and special effects with text.
Dear Emily Mooney,
Good day!!
As per the description shared, I understand your concern and since you have mentioned the AutoSave has saved the presentation & you have also manually saved the presentation before the sudden shutdown of the computer but when you open the presentation today, the presentation is not showing with latest updates, I would like to request you check the version history of the problematic presentation and see whether there is any success of finding the version with the recent changes made:
Open your browser and go to the location where the problematic presentation is present> Right-click on the Version History> Hover your mouse over the previous version> Click on the three dots> Open File> Open the downloaded version to check whether it contain recent changes made.
If there is no success, I would like to request you to access the Recycle bin of the location (OneDrive for Business/SharePoint Online) to check whether you are able to find the version of the problematic presentation. If you are able to find, please select the version and restore it.
If there is no success, please check whether there is any version saved under the Unsaved Locations in the PowerPoint presentation:
Open the PowerPoint app> Open tab> Recover Unsaved Presentations> If you are able to find any version, please select the unsaved presentation and click on Open.
If still there is no success, I apologize to convey that the chances of restoring the missing version is less and if you have chance to connect with the IT admin of your Educational Institution, please contact the IT admin of your Educational Institution and request them to raise a new service request from the Microsoft 365 admin to see whether there can be any luck to restore the missing version.
Appreciate your patience and understanding. Have a great day!!
Best Regards,
Sophia