To summarise, possible workarounds discussed in the 35 pages above include:
- editing the registry to disable CPU idle states
- editing the registry to disable the touch screen
- install and configure Throttle Stop
- install Winstep Nexus (a MacOS-style dock for Windows)
- install the RingCentral Classic app.
My impression is that people fall into two groups: those who don't find any of the above acceptable, and those who are willing to adopt some such step because they'd like to keep the laptop (or have no choice but to keep it) and want to get rid of the static sound.
For people with the latter perspective, it would be extremely useful to have an expert assessment of the pros and cons associated with each of the options above. What has the least impact on performance and battery usage?
I've taken the RingCentral route because it's easy to understand: it's just a background process that seems to make low demands on CPU and memory. I'm reluctant to start editing the registry because I don't understand the implications of the commands described, but I'm open to persuasion if it makes sense to disable CPU idle states in that way.