Enable your laptop screen
You may want to enable your laptop screen next time you run the diagnostics. Then when the external monitor(s) freeze, you should be able to still use the laptop screen to run the diagnositcs. This does not work for everyone.
If your laptop monitor does work while your external monitor(s) are frozen, then you can try these steps. Open device manager, expand "universal serial bus controllers" and then one at a time disable and then enable the USB Composite Devices. If you have an external mouse running from a USB port then you may lose it and have to use your laptop's built-in touchpad. If the external monitor(s) start working again then you have found the composite device that it/they are on. Not a solution but it may be easier than unplugging your DL adapter and then plugging it back in.
I am hoping 7.2 will solve this problem for me.
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