When I clicked on a tutorial link for sewing, I received a notice that I was infected with "Rootkit.sirefef.spy and Trojan Virus found on System 32 NT Kernel". Another pop up box said "Windows Defender Error Code 0x80073afc" and some other information but could not read it all because another popup box that wanted me to click "Okay" was covering part of it. I didn't want to click okay, so I restarted my computer as I could not close Windows.
I briefly used the pc after this, mostly to visit this site, and Microsoft's site, and it seems to run okay. I also ran Malwarebytes Anti-malware scanner which showed 0 infections. Microsoft site recommended downloading their "Microsoft Safety Scanner" from another computer and running it. Do you think this will actually work?
Thank you for any advice.