Please try to update/re-install the USB driver for your Notebook.
Did HP have any tips or tricks?
I mean since you have already tried 3 different adapters before trying the CAC-1504, the chance that the problem comes from all these adapters (and certainly ours) is not very large …
If you send an email to [email protected] they will send you the latest firmware update for the adapter, but that will of course only help if that is where the issue comes from which is not very likely.
Please aslo check for latest Graphics Drivers ..
Using the upgrade feature to update Graphics drivers can cause issues, because old files can remain in the registry of windows and can be “in the way”.
Please make a new clean driver installation to make sure that part is ok.
Please uninstall the current Graphics driver and all related Graphics software like Afterburner/GPU-Z or whatever graphics related software you might have installed.
Best way to remove Driver Software is to boot Windows in Safe mode, so the registry can also be cleaned.
If your system does not allow you to do that, you can also use a program like DDU to remove such software: http://www.wagnardmobile.com/DDU/
Also, please manually delete the AMD / Nvidia Folder from your C drive.
When done, reboot and manually download and install latest available driver for your Card (don’t let any auto installer do that).