I have an SP3 i7 512 with a docking station that connects to an external monitor through mDP to DVI cable. When I dock the machine, the taskbar is replicated on the monitor, although not the right hand section that has the clock and notifications. When I remove the machine, then put it back, the partial taskbar on the monitor reappears but the full taskbar on the SP3 is gone. Even after I remove it again, the taskbar stays gone. The only way I've found to get it back is to reboot. Has anyone else run into this and (hopefully) found a solution? Thanks.