One of my Microsoft accounts causes my keyboard to NOT respond (touchpad STILL works) after I log in to that Microsoft account on Windows 8. I know the account is the culprit because the keyboard works with my OTHER Microsoft accounts!

I have had the hardware checked out by my PC manufacturerS (YES! this is happening on BOTH of my Windows 8 devices) so I know that the hardware is NOT at fault.

By the way, the keyboard works with the built-in administrator account!