Windows 10: What is this 'Main Windows' thing and how do i want to remove it?

Hi, i don't know if this an issue or something else, but this weird thing popping out of nowhere which i have not encountered before, suddenly appear on my desktop every time i restart or turn on my pc, which i have no idea what is it. Is this thing is normal or there is something wrong with my pc.


Side note: Well, it didn't affecting much of my pc, neither performance or else, but my eyes just cant handle watching this very small barely noticeable square on my desktop screen BTW, that is not a dead pixel or something, i can close it with ease which through task manager or simply win+tab key. I have MSI GF63 laptop, which before i did not encounter such things until it suddenly appear out of nowhere whenever i turn on my pc. Thanks, picture is provided.

That very small rectangle thing appear on my screen, sometimes appear on full screen small but noticeable when im gaming or watching videos in full screen.




This is the name of the windows when i open the task manager



:)

 

Remove account

I suggest you backup your personalized files first before removing the account.
To delete an account, follow these steps:

1. Press WIN + X keys and click Command Prompt (Admin) from the menu.
2. Type the following command and press Enter. Replace test with the name of your sister's account. Code:

 

windows xp installation and dual core am

could someone please list the steps they follow to install windows with a dual core processor and windows xp service pack to. I'm reletively new to amd dual core and i feel i'm missing a step. All help will be appreciated. thanx

 

How can I remove this virus remnant?

I was also going to suggest Autoruns.

Check to make sure it isn't attaching itself to explorer. It should be the 3rd thing listed in Autoruns, the listing for the Shell. It should just be Explorer.exe. If it is anything else, that might be your problem.