The following may appear on your screen. This is a scam to a foregin number hoping you call and they charge you several hundred dollars to “unlock”!
What you need to do is press the following 3 buttons simultaneously Ctrl Alt Delete
Select Start Task Manager
Then find the Google Chrome Task
Select END TASK
This should unfreeze your Google Chrome.
When you go back into your Google Chrome
A pop up may ask if you want to RESTORE where you were, do not select this.
You should advise your IT service provider this has occurred as well!