after i start/restart my Win8.1 laptop with an external monitor on HDMI, the taskbar is on both monitors. The only difference is that on the laptop display, the notification area, a.k.a. "the tray" is also present.
randomly, the taskbar will disappear from the laptop's screen while remaining on the external display ... to get the laptop's taskbar back, i shut down and restart.
is there a way to do this without rebooting?