Windows 10: My folders tab from this pc has been disappeared suddenly. I found the solution earlier but...

My folders tab from this pc has been disappeared suddenly. I found the solution earlier but could not remember that, if anyone can help me.

:)

 

Disappearing folder

I've encountered a strange problem in windows 10 where I tried to delete a file in a folder, but ended up deleting the whole directory. It did so without the usual pop-up to confirm delete or say it was too big for the recycle bin. It was my Videos folder, so pretty big, but the disk allocation has also remained the same.

I've always had a problem with 'double icons' for the different user folders, including videos, and so I'm thinking it could have something to do with the whole thing, especially as now one of the two video folders has disappeared from the users folders.

The first thing i tried was 'Undo delete', but it just bought the folder back with non of the contents. Then, I went straight to Recuva, but it came up blank (there must have been over 50 videos in the folder)

I'm at a little bit of a loss as where to start looking for this disappeared folder and was hoping someone might have some suggestions?

Screenshots below:

 

Window tab suddenly disappears

When moving the cursor to the window tab that is selected from the task bar suddenly disappears and gets back of other window when cursor is being directed to the selected window

before when i open any window it would remain there but now while moving the cursor to that window it is disappearing to back of other window

This is so irritating please provide me with the solution

 

Disappearance of the list of folders.

Suddenly the listing of my folders on the left side of the screen has disappeared. can anyone help?