I've some Problems with my HP EliteBook 820 G4. As soon as I close the lid, Windows makes a "Device Connected"-Sound. Then, as soon as I open it up, it makes a "Device Disconnected"-Sound. When I leaf it closed, at some time, it begins making this sounds at completely random times. Sometimes it does this sounds 1 or 2 times in a minute, then it does it 5 or 6 times in a minute.
I've installed an "USBLogView"-Utility from nirsoft to keep track of USB-Devices that are connecting or disconnecting from the notebook. I've tested it with a flash drive; this is logging just fine. But closing it, hearing the sound, opening it back up does no entry in this USBLogView-Application at all.
I've also tried to do this: https://superuser.com/posts/1096961/revisions --> But same results.
I've googled this issue, so I found a common problem with Bluetooth or Wireless Chips/Cards. I tried to disable all Network and Bluetooth devices AND all USB-Host Controllers, but this hasn't stopped the notebook from making this annoying sounds...
I want to find out, why the Notebook is making this sounds and why I cannot log this, not with the tools of the operating system, nor with third-party applications.
Can someone please help me?