As we all know that in Windows 8, there are a lot of files can not be removed, even though we know they are junk files. And win 8 will indicate us that only administrator can delete them. Since the Windows Vista, all the windows OS has such problem, in order to prevent the mistakenly delete. While you can remove them in the following way with your mouse simply. When the Win 8 system indicates you use the administrator account, you can get the permission by choosing Administrator in the file/folder in the indicating window with right click and then delete them.