This started few days ago, and coincidentally (although may not be related) after the latest Windows updates. It is very bothersome and if I don't get around resolving it, I will be forced to severely limit BOINC's activity on my PC.

The issue is that when BOINC runs it keeps either scanning for or disconnecting/connecting attached devices every few seconds. When I open the Device Manager in an attempt to identify what is going on, all I see is the latter flashing as if a device scan has been initiated.

This literally keeps on happening every few seconds and started few days ago. The most annoying part of it is Windows' sound, which In of coarse can disable, but there has to be a proper solution for that. And I know that BOINC does because when I exit the manager, this scanning goes away. And alternately, when I restart BOINC the constant scanning resumes.

Can anyone suggest a solution? Thx

P.S. PC's specs and BOINC version: Board - ASRock X470 Taichi, CPU - Ryzen 5 2600x, RAM - 32GB G.Skill 3200, Win10 64bit, Nvidia GTX980 Ti, BOINC V7.14.2

Well, BOINC doesn't really do anything itself, it just "manages" the various science projects to which you're attached.
And the BOINC Manager is just a gui that lets you see what the hidden BOINC client is doing. THAT's the part which does the actual "BOINC work".

My guess is that you have a power problem, perhaps something not plugged in fully.

One test that you could try, is to use the BOINC Manager to "Suspend" all of the science projects, and see if allowing BOINC to run is still a problem without any project load on the computer.

If windows updated, check to see if you still have OpenCL driver installed. Post BOINC log or check in GPU-Z

I have OpenCL driver installed, anyhow so far what I did is the following. Suspended all projects - didn't resolve it. Closed and opened BOINC with all projects suspended - same thing. Started removing projects, and after the first two in alphabetical order - Cosmology and LHC, the issue went away immediately.

Next I need to find out which one of those is causing it (I suspect LHC since it's using virtual box) .Couldn't load back Cosmology yet because it seems to be down at the moment. So I loaded LHC which succeeded, but it failed to load its first task and now I'm waiting. Will eventually figure out which project seems to be implicated and will reach out to the respective team for assistance.

Thanks for responding, I'll post back more details as I uncover them, Regards!