I was online today, on a pretty harmless, totally SFW website where you can share cat photos, when I was suddenly alerted TWICE within a minute by my Avast Free Antivirus that a virus was detected and connection safely aborted. Then, I was in Google Drive in my Gmail account a few minutes later and it happened again... also twice. I'm not finding any viruses on my computer through scanning and I don't know whether I need to be worried or not, but I don't want this to happen again. Another odd thing that happened today was that I inserted an SD card from my camera into my computer so that I could put more photos on my PC (some for uploading onto this site as art) and it said "cannot format H drive", but let me put the photos on my computer anyway. Then, I saw that one was flipped sideways, and went to fix it in Windows Media Viewer, and it said that it couldn't save it due to an error and then saved it anyway. I'm confused! Is my computer overheated, virus-ridden, falling apart or what?
Here's a picture of what my Avast notifications are telling me. Has anyone else experienced anything like this?
UPDATE: I've concluded that I had a virus which infected Google Chrome on my computer, installing itself as an extension, so I just uninstalled Chrome entirely and then installed it again. I've lost almost a decade's worth of bookmarks, but that's okay. If the site is important enough that I want to visit it again, I'll just remember it and then re-bookmark it. So far, so good. Now, to keep an eye on my bank account and make sure that this phishing wasn't happening the last time I made an onliine purchase.