Virus close all browsers

I’ve had this problem for a while now and I’ve everything I knew to try. Checked my computer with Avast but it ends up not fixing it. All browsers I tried (Avast browser wasn’t an exception) were closed. Open - close, open - close. Argh. I reset my pc and it comes back. Today, when I scanned my pc and had 52 items, appeared naturally I deleted them all, but later like 20 mins, it started doing it again. What should I do?

What warnings is Avast coming up with? You can post a screenshot using Attachments and other options below the reply text box.

Have you tried downloading Malwarbytes free and run that (with real-time protection set to off) as a second opinion full malware/virus scan.