Hello.
Try this method.
Start > Run, type in services.msc. Scroll to near the bottom of the list and look for Windows Defender.
Double click to bring up the information about that service, change the service start type to automatic and and press the Start button if it says not running or unstarted.
Try this method.
Start > Run, type in services.msc. Scroll to near the bottom of the list and look for Windows Defender.
Double click to bring up the information about that service, change the service start type to automatic and and press the Start button if it says not running or unstarted.