The png file is the screenshot image shown in the save/load window.
If you zip the lsv file in the save folder, does the size decrease significantly? It is already compressed, so if zipping it reduces the size by very much it would imply that is is corrupt and there is missing data in the file (one or more sections replaced by zeros, for example).
You can also check the save using an extractor program, if you wish.
http://larian.com/forums/ubbthreads.php?ubb=showflat&Number=572322&an= https://s3.eu-central-1.amazonaws.com/nb-stor/dos/ExportTool/ExportTool-latest.zip After starting the program, switch to the 'PAK / LSV Tools' tab, in the 'Package path' browse to the save's lsv file, then for the 'Extraction / source path' browse to that or another profile's '..\savegames\Story' folder and enter a new folder for the extracted files (you can copy/paste the path from the path listed above and edit it; ie to be '..\Story\HonourMode_extracted') and click the 'Extract Package' button.
Did you check if the save on the laptop works? Try exiting out of Steam, or disable cloud support first, in case the online version is corrupt.
Do you have any recent backups of your My Documents folder?
If you are using Windows 10, it may have put My Documents in a OneDrive folder.
Do you have
Windows shadow copies enabled, if applicable? Try right clicking the save folder, or the 'Story' folder, select Properties and (if available) switch to the Previous Versions tab to see if there are any copies.
If applicable, Steam keeps a copy of the profile in its install folder, to use when syncing, so you could try searching there with Recuva, as well (Steam usually syncs automatically when exiting the game, and restarting should always trigger a sync, if required).
With the Steam version, if your save is still online (Steam did not sync, or the save became corrupt after it synced), you should be able to download it using the program
Steam Cloud File Manager Lite. You need to be logged in to the Steam client and have the game's AppID (435150).
https://github.com/GMMan/SteamCloudFileManagerLite/releases/download/v1.0.0.0-alpha-1/Release.zipYou can try a file recovery program such as
Recuva, but it may not be able to completely restore previous versions of overwritten fies, especially for honout mode save, since it gets repeatedly overwritten. In general, the more you use the computer after files are deleted, the less likely they will be recoverable.