"Threat has been detected" Fake Alerts - How to Effectively Remove?

"I recently installed Avast as my Anti-virus and today for the past 2 hours a voice would say 'threat has been detected' every 2 seconds, and a pop-up comes up saying "the threat was detected and blocked when the file was created or modified". So I have nothing to worry about right? But the voice keeps coming up, it's so annoying. I can't listen to music without it coming in. How do I stop it?"

Information about "Threat has been detected"

"Threat has been detected" is related to some malware or malicious programs. If you get pop-ups from it, you need to be cautious. Your PC may have been infected by the threat. It can sneak into your PC by exploiting system loopholes or software flaws. Other unwanted software can lead it to you. After the infection, your PC may act abnormal. "Threat has been detected" attempts to steal your confidential information for commercial purpose. Pop-ups and fake alerts are everywhere. You may want a reputable removal tool to remove it.