In the "Cortana/Search" line, type "msconfig" and when it's listed at the top, RIGHT click on it and choose "Run as administrator". When the System Configuration box loads, select "Normal startUp", then click on "Apply", then OK. If it's already on "Normal", select "Selective Startup" and immediately re-select the "Normal Startup" option. Reboot the computer.

Hope this helps.

Grif