First, I'm IT pro with 20 years of experience. But I'm really confused here.
Today I visited my mom. During the visit I copied some photos from CF card using laptops cardreader, and also copied a downloaded file (Camera firmware) back to CF. Nothing else. Not sure if this has anything to do with what happened next.
Now I'm back home and my mom calls me - she says she lost her videos, a whole folder of downloaded mp4. She watched videos from it yesterday and now can't find them. I connect to her and see this:
About 20 mp4 sized from 0.5 to 4 gigs downloaded in past few days are in Firefox download history. "File was moved or missing". Okay.
Recycle bin - some bad photos I deleted today after copying, nothing else.
WinDirStat - ok I see some big mp4, those are old, nothing here. So folder was not accidentally moved.
Recuva - yeah I see around 10 deleted mp4 here, yay. Can be restored. But! Those are videos my mom already watched and deleted them. So again nothing.
Well, I'm out of ideas. Files not moved, and not deleted. Where are they? No traces, but they are in download history.
Mom has single c: drive, no USB flashes, no network shares.
Windows 10 20H2 laptop with SSD if this matters.