The kindest thing you can do for the world in this situation is keep on the line.
“Oh, a virus/hacking/whatever. That’s terrrible, thank you so much! Let me turn on my computer, hold on please”
<Put line on mute, carry on with life for 2 mins>
“That’s it it’s on. What should I do now”
<Don’t listen for answer, carry on with your life for 30 secs>
“Ok, I’ve got it. Just hang on let me find where to that”
<Put line on mute, carry on with life for 2 mins>
And keep them hanging while not actually investing much time if stringing them along. That way they’ll have less time to scam some other person.