Hello TwinHeadedEagle, thank you for replying.
When using Google Chrome, a new Tab appears indicating not to shut down, but to phone a number. I did not record the number. I did record the following:
ZEUS-44-xyz
I had to shut down via the Task Manager. When re-started, the computer acted normally until Chrome was started. Then had to shutdown via the Task Manager again.
I started the computer again, ran Malwarebytes, and Avast. Chrome would not open, so I reinstalled Chrome, deleted the Cache. Seems to be working okay now.
Malwarebytes and Avast did not report that they found any virus or malware.
Regards, Paul.