Ghost Artifact Inspirion 5477

The Inspirion 5477 AIO started showing a small sqare artifact at loginand on desktop...H ad just upgraded from Home 10 to Home 11...just maybe?  Tried a number of this from re-install  a few times with full hd format.  Ran a script that returned: HWND: 65744 | Class: Shell_TrayWnd | Title: '' | PID: 5796 (explorer) | Flags: TOPMOST ?? Suspicious class, Untitled window
HWND: 328062 | Class: ConsoleWindowClass | Title: 'Administrator: C:\WINDOWS\System32\WindowsPowerShell\v1.0\powershell.exe' | PID: 5452 (powershell) | Flags: LAYERED
HWND: 131176 | Class: Windows.UI.Core.CoreWindow | Title: 'Windows Input Experience' | PID: 3924 (TextInputHost) | Flags:  ?? Suspicious class
HWND: 65868 | Class: EdgeUiInputTopWndClass | Title: '' | PID: 5796 (explorer) | Flags:  ?? Suspicious class, Untitled window
HWND: 65876 | Class: DummyDWMListenerWindow | Title: '' | PID: 5796 (explorer) | Flags:  ?? Suspicious class, Untitled window
HWND: 65832 | Class: DummyDWMListenerWindow | Title: '' | PID: 5796 (explorer) | Flags:  ?? Suspicious class, Untitled window
HWND: 65830 | Class: DummyDWMListenerWindow | Title: '' | PID: 5796 (explorer) | Flags:  ?? Suspicious class, Untitled window
HWND: 65828 | Class: DummyDWMListenerWindow | Title: '' | PID: 5796 (explorer) | Flags:  ?? Suspicious class, Untitled window
HWND: 65826 | Class: DummyDWMListenerWindow | Title: '' | PID: 5796 (explorer) | Flags:  ?? Suspicious class, Untitled window
HWND: 65790 | Class: Progman | Title: 'Program Manager' | PID: 5796 (explorer) | Flags:  ?? Suspicious class

Any ideas...also went through a full download of files from Dell as suggested. Thanks.