Luckily I heard a good piece of advice on the radio last week. If you get a ransomware type attack on your laptop, take out the battery! I got hit with screen locking tech support scam on Sunday as I was getting ready to do my taxes! It takes over your computer so you can't do anything. Your screen is locked on their warning message and the audio warning blares from your speakers. It tells you your computer is infected with a virus and you need to contact "Microsoft". Of course the number they tell you to call is not going to actually be for Microsoft. It is a tech support scam to get your information. I guess this is not technically "ransomware" since they aren't telling you upfront to pay to get your data back. I don't know what they do when you call the number though since I didn't call it!
I took out the battery and that seemed to solve the problem. I don't know if that was actually the right course of action but it seemed like a start. Now I see I shoudl have taken a picture of the message on the screen first. It looks like I may have been able to shut my computer down with the power button rather than taking the battery out but in any case it worked!
If you get any sort of scam warning on your computer, DON'T DO WHATEVER THEY TELL YOU TO DO! If they ask for information, don't give it. If they tell you to call their number, don't call it! Look up the correct number yourself (for Microsoft etc). These are all scams to get your infomation and or money.