tried to post about this just now and no luck, so apologies for any repetition.
half-asleep at night feed, tried to bring up something mumsnetty from browsing history, a message comes on screen (have pop-ups blocked and McAfee enabled) advising us to run a free scan, wouldn't let me close it down with red x in corner so I got my husband (also half-asleep, bless him). He thought it came from the computer software so clicked "run" for the free scan which then reported malware. I don't know whether he then asked it to fix it or not. We then became suspicious. He's gone back to bed but I can't sleep for worrying in case something has now been installed that could get our financial details or wipe files. I have run McAfee and the scan found nothing. What should I do?