Got a problem with two brand new ZBooks 14 and W7 pro:
The Unit boot up to the Windows Password screen but then it make a loud 50Hz noise from the speaker. No Mouse/Touchpad/Button reaction, only long pressing the POWER-Button shuts down it hard.
Then I must 2 to 5 times try to start Windows in safe mode, in this case there is no noise because no audio drivers but also no reaction when the Password screen appears.
After this procedure all works normal. In this state, I can reboot the system, shut it down and start again.
Next Day, the same trouble.
I try to update all drivers and the BIOS to the latest version. Also play back the original Image to the SSD. Latest after the first about 137 Updates from W7, all of the problems came back.
In some cases, the noise is a little 'sweeping' and the system comes up after a few seconds. While the noise is there, also no reaction on Mouse/Touchpad/Buttons.
