Hi J, let me try to assist you.
Try deleting this folder in safe mode. Restart your computer and before the logo, constantly press F5 and select safe mode. Once logged in, try to remove the folder you are trying to delete.
You may also try to run command prompt with administrator rights
Type CMD, instead of pressing Enter key, right click and select run as administrator
From the command prompt, type the command below. Replace the <folder path> the the specific folder you are trying to delete.
rmdir /s /q <folder_path>
I hope this helps. Let me know if the problem still persist, don't hesitate to ask for further assistance.
Regards,
Arnel