![]() 6.2) Make sure dock power is good (LED at front of dock should always be on when good power is present) 6.3) Make sure that monitor has correct input source. 6.1) Remove and reinsert monitor cable to dock. If it is not, a couple of additional troubleshooting steps to take follow. However, there are some proprietary systems available that enable this type of connection. 6) At this point, your external monitor should be working. Windows 7 does not provide native support for video displays that are connected via USB. ![]() This is a known issue when using USB-attached displays in Windows. Power off the computer and restart to refresh the connection. ![]() When a new monitor is plugged into a running system, Windows 7 attempts to switch to a configuration in which the new monitor is enabled. Check that the monitor is plugged into a power source. Therefore, Windows believes the external monitor was plugged in after the computer had already finished booting. This behavior occurs because the driver for the USB video adapter enumerates the attached monitor after Windows has already initialized the video subsystem. If you select a "Computer Only" configuration, and then reboot your computer, you may find that after rebooting, the configuration is changed back to "Extend," "Duplicate," or "Projector Only." Cause (You can select a different display configuration by pressing Windows + P keys on the keyboard.) For example, you may attach a USB Port Replicator device, containing a DVI or VGA port, to the USB port of a laptop computer.Īfter attaching the secondary monitor, the display configuration may default to "Extend" or "Duplicate." You may then change to a "Computer Only" configuration, in order to turn off the secondary monitor and use only the primary monitor. On a computer running Windows 10, you attach a secondary monitor via a USB connection. This article explains an issue where the display configuration is retained after reboot when you use USB-attached monitor.Īpplies to: Windows 10 - all editions Original KB number: 2465368 Symptoms
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