Windows 10 Windows 10 Pro Sleep Problem

I have been having a problem with Windows 10 Pro will not sleep for at least a month. No matter what I do it would not sleep. It would Hibernate just fine, and the Display would sleep, but not the PC. In Event Viewer I kept seeing something like "???never sleepagain???? listed relating to Intel. Today, just for kicks and grins I went to msconfig and unchecked everything that has Intel in the name. Rebooted and now when I click Sleep, it goes to sleep. Does anyone know what or why is it that having Intel running prevents the sleep mode for the PC?
Thanks for any answers
Jerry