Maybe a little info about your system would help. Is it a Laptop or Desktop, and model? What power scheme are you running? Is any media streaming involved?
Open up an administrative command prompt and type the following command. Shut down all programs you can and let the utility work. After it is finished, copy the .html report the desktop and open it there.
USB warnings show up quite often, so don't be that concerned about them, but look for something else that might explain the problem.
[To open an Admin Command prompt, use the Winkey and type cmd then CTRL+Shift+Enter]