If your monitor is still attached you can use ⊞ Win+⇧ Shift+⇦ or ⊞ Win+⇧ Shift+⇨ to move a window from screen to screen (this will not work if the monitor is not attached).
If your monitor is still attached you can use ⊞ Win+⇧ Shift+⇦ or ⊞ Win+⇧ Shift+⇨ to move a window from screen to screen (this will not work if the monitor is not attached).