I am using latest release of Windows 10 using an external monitor with a Dell Inspiron. I have the laptop lid closed so that monitor is off so I am only using external monitor. I cannot see start menu or task bar on bottom of screen. I was looking for options in my monitor menu to shift image vertically but it does not have it.

Also if I point my mouse just below the left corner and click nothing comes up (tried this to see if start menu was there and just out of sight)

I also tried to adjust scaling using Intel HD Graphics Control Panel. I can crop the vertical image smaller than monitor but still no task bar.

If I hit the windows key I get the start menu but not taskbar. If I reboot it comes back but from time to time this bug will reappear.