Google may put an end to pop-up dialogs, a technique used by scammers to scare computer and smartphone users into paying for things they really don't need.

Tech wizard Kurt "CyberGuy" Knutsson addresses the notion of pulling the plug on a computer if you receive a suspicious pop-up message.

Q: I keep seeing the following message pop up on my computer: "Windows cannot find javaw.exe. Make sure you typed the name correctly and then try again." I think this happened when I deleted some ...