The image part with relationship ID rId2 was not found in the file.

What's actually wrong

Every picture in a .pptx lives as a file inside the package's ppt/media folder, wired to its slide by a relationship ID. This message on a slide means the wiring points at an image that is no longer in the package — classically caused by editing the deck directly on a USB stick, or in a Dropbox/OneDrive folder where sync locked the file mid-save, so PowerPoint wrote the slides but not the media. Be honest with yourself here: if the image bytes were never written, no software on earth can regenerate them. Recovery is only possible when the images still exist in the package (broken wiring) or in an earlier version of the file.

Free fixes — try these first

1. Check whether the images are really gone: copy the file, rename the copy from .pptx to .zip, open it, and look in ppt/media. If your pictures are there, they're recoverable — the links are just broken. If the folder is empty or files are 0 KB, the image data was never saved.
2. If the file syncs to OneDrive, SharePoint, or Dropbox, open the file's Version history on the website and restore the newest version from before the red X's appeared — this is the highest-value fix when it's available.
3. Search your Sent items, email attachments, exported PDFs, or copies on other machines — an older copy of the deck is a complete image source, and you can copy-paste slides from it.
4. If ppt/media still has the images, drag them out of the ZIP and re-insert them onto the affected slides — tedious but fully free and reliable.
5. Going forward, never edit a deck directly on a flash drive or in a live sync folder: copy local, edit, copy back. Microsoft's own guidance and the PPT FAQ both name this as the cause.

If the free fixes fail

The maddening part is not knowing which case you're in — images gone versus links broken. Our free diagnosis answers that definitively by reading the raw package: if the media parts survive, the analyzer re-links every orphaned image back to its slide; if they're truly absent, it tells you straight instead of selling you false hope.