RPC hangs Windows?

Solution 1:

I got my solution from the HP forum (link https://h30434.www3.hp.com/t5/Notebook-Audio/Flow-exe-spikes-to-20-CPU-and-causes-sporadic-windows-freeze/td-p/6483020/page/2):

Rename Flow.exe file "C:\Program Files\CONEXANT\Flow\Flow.exe" to something else (Flow_dontstart.exe for example).

Background: It seems that the Flow-Tool from the Conexant Bang & Olufsen audio driver is causing the mess. From the description on the forum it checks certain programs to derive the best audio mode from it. When it tries to read information form Firefox it causes the OS to freeze up.

Since I renamed flow.exe my Elitebook 840 G5 works fine.

If you have the Bang & Olufsen audio hardware, this should work for you.

And: Don't try to remove the Bang & Olufsen software via "Apps & features". It will come back automatically.