We have to install some malware to cause this to happen. Today's antivirus systems don't stop us from doing that and only know existing bad things, not all.
I'd make use of your disaster plan. Think over what site or app you recently used or installed.
There are Antivirus Live CDs that come in handy when folk don't have a recovery plan.
Bob
Have Avast installed and recently had a ton of popups warning about bad items and the popups were coming up about every 15 seconds. Tried to uninstall Avast and now I cannot use my laptop at all....

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