Windows 10: Flipping black square on the bottom left

Recently, a flipping black square appears on the bottom left of my screen. It appears when I am playing the game some time and when I am using Microsoft word. I guess it has something to do with the start menu, but I do not know how to fix it.



:)

 

Black Square behind some of my Folder Icons

Follow these steps :

http://www.freegyan.tk/2016/06/problem-windows-os-black-square-behind.html

 

Black square

it appears a black square when I am going to type (the insert tab didn't work) why does I do need help.

 

How to remove arrows from desktop icons in Windows 10 without getting black squares?

Part 1 - Remove arrows once (will break on reboot or re-login)

• Type regedit in the Windows search bar and select regedit at the top of the list.
  
• In the regedit program, navigate to HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer
  
• Right click on the Explorer folder, hover over New, then click Key. Name it Shell Icons and click enter or whatever to create it.
  
• Click the new Shell Icons folder. In the right pane, right click on the empty space, hover over New, and click String Value. Name it 29.
  
• Double click the String Value 29 you just created and give it the following value data: %windir%\System32\shell32.dll,-50
  
• May or may not have to reboot I forget. Check your desktop icons first to see.
  

Part 2 - Fix the black squares problem

When you reboot or login after Part 1, where the arrows once were there will now be black squares. To permanently fix the black squares problem, a short script will run automatically every time you login to fix the icons before you see them. Non-programmers can easily follow these simple steps.

• Open Notepad.
  
• Paste in the following and save it to the desktop as fixdesktopicons.bat (name not important, file extension .bat is important). Basically it deletes the corrupted part of the icon data.
  
  
• Press Windows key + r
  
• Type shell:startup and press OK. This will open a folder where you can put scripts that you want to have run automatically whenever you login.
  
• Copy the script (.bat file) from your desktop and paste it into this folder you reached by doing shell:startup.
  
• Reboot the computer for changes to take effect.
  

Now whenever you login or reboot there will be nice icons with no arrows and no black squares either.