Setting up an external monitor. To do so follow the steps below.

Dual Apple Thunderbolt Display S Unboxed Amp Connected To Macbook Pro
Thunderbolt display not detected. Disconnect the plugable thunderbolt 3 dock from the system and remove its power cable so it turns off completely. Description the dock is not recognized when the thunderbolt security level is set to when this occurs the bitlocker pin code cannot be entered with an external keyboard attached. Disconnect the thunderbolt display from ac power by unplugging the cord. To troubleshoot the scenario where a thunderbolt 3 device is not recognized properly we suggest checking following items. Anyone to help please. After the software update process completes connect the ac adapter to the tb16 dock first and then attach the thunderbolt 3 usb type c cable to the pc before using the docking station.
This occurs on the hp thunderbolt docks listed in the scope. Disconnect and re connect the thunderbolt cable andor. Disconnect all usb peripherals and any cables plugged into the thunderbolt display. Turning off on or pluggin off in the monitors from the dock did not help. Uninstall the intel thunderbolt software present on your system via the control panel programs and features. Enable thunderbolt boot support disabled by default.
Since your computer is detecting the thunderbolt adapter theres a possibility that the problem could be on the monitor as it doesnt detect the adapter when you plugged it. In windows display settings when i click on the detect button the result is. Microsoft windows operating system includes the vga graphics drivers only. Make sure that both the computer and the device are turned on and that the thunderbolt 3 device is connected to the. You may find that some monitors cannot be detected or initialized after unplugging and re connecting the dell thunderbolt dock tb16 cable to your precision 7710 or 7510 mobile workstation system. Didnt detect another display after wake up.
Disconnecting and reconnecting the dock from the laptop did no help. Wait at least 30 seconds before powering on your. Power cycle for 30 seconds disconnect the thunderbolt displays magsafe cable from your mac. Restart the system even if. To isolate this problem please check if the monitor youre using supports a thunderbolt3 to displayport connection. When disabled the thunderbolt technology feature is disabled and any connected thunderbolt adapter devices are not available in preboot or within the operating system.
External display detection not retained.