Thank you for your time and information. I uninstalled the 3 3rd party programs you cited. I do not have any USB devices normally in use on this computer. This computer has an sealed battery - so if I need to, I can get to it to disconnect it and hold down the power key for 30 seconds, but it is a bit of a project on this laptop.
I did follow your link to USB Driver - General Fix for Problems
and followed those instructions.
I will post back if I have problems. Thanks again for your attention.