After looking in different places this might be the first one I found with people having the same problem than me. To be honest I was starting to think it was some sort of virus and for I could read at the Windows site, they claim to be clear of fault.
In my case I did the upgrade to W10 and everything seemed fine. A few days after that I noticed that a random pic I have saved on my desktop was missing but I thought nothing of it since it was not really that important. At some point I even thought I had deleted it by accident. But just today I tried to open a Photoshop file ( that I have been working on a day before I might add) and apparently it didn't saved it. I'd see it in the Quick Access thing but it didn't let me open it. And after a quick look I found out that other files were missing too. To my disbelief everything in that folder and a few others folders from the Desktop and the Dowloads folder were also gone along with their own files. Images, music and even video. All deleted. And the windows.old folder was also empty. I still can see all the files in the Quick Access but when I try to open one I get the "you can't open this file blah blah blah'" message. Fortunately I DO have the habit of backup my stuff, so not everything is gone forever,but the Photoshop file that I have been working on almost for a whole day? that one was lost >:|
Honestly I don't know what to do. Because in my case it wasn't just old files, it was a new file, one that it was created AFTER the freaking upgrade was also lost or not saved all, I really can't tell. And it makes me mad because I'm always so careful with my laptop. I run antivirus/spam, I do the constant backup etc etc. In fact I just got my antivirus/malware to do a run and found nothing. I'm using Avast though, so there's that.
It's really upsetting that this is happening. Like, if I turn on my laptop tomorrow what it will gone now? Programs? Tbh I don't know if I should go back to 8.1 and if I do the problem will be fixed? Gah!!