New
#11
Similar issue I had too, and ended up boiling it down to the Microsoft Audio Endpoint Builder service. Found if I went into device manager and disabled the ATI HDMI Audio driver (Don't even have it hooked up) viola! Problem solved.
My cpu usage wasn't 100, more like 20%, constantly at idle. I'm quite happy with this now :)
Hopefully this will help anyone else out with random svchost.exe cpu hoarders!