Hi, and thank for your question.
Since you already stated that you had tried shutting down and restarting without success, please do this now:
First off, close out any browser windows, if open.
Next, type in any website address, e.g. www.google.com, in the search box at the bottom of your screen at the taskbar, and press ENTER. This will open up a browser window with that website itself, and from there, you may just "X" out of the other tab that was stuck at the infected popup message.
Done that, close and re-open the browser - the same page will not show up from now on as well.
Please keep me posted. If you need more help, please use the Reply box below to continue our conversation.
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