I quickly discovered if I clicked Close that the virus kicked me back to my start-up screen asking me to log into Windows again, returning me to the same black screen with the same pop-up. Clicking Learn more online opened my web browser and took me to an interesting URL trying to upsell me on Windows 7. It almost looked like a legitimate webpage, but the graphics were a little off, the functionality was suspicious, and when the URL opened, it appeared that it had redirected from another funky URL that was much longer. I managed to get through to Microsoft tech support via chat (after managing to contact what I assume was a malicious chat person who asked to remotely log into my computer), and they helped me install new virus protection software, which was able to catch the virus and remove it.
I rather enjoy live chat. They may not be from around here, but if they know what they're doing and can help me, I got nothing against them. I then updated my security measures on my computer, compulsively, trying to make them even harder to break through than before. And what gets me is I don't shop online. These guys attacked a computer and failed miserably because they can't even steal any financial info from me. So put that in your pipe and smoke it, Trojan Horse creating dickheads.
Reminder to all: use a password for EVERYTHING. Don't use the same one for them all either. And make them challenging. Numbers, capitals, characters (when allowed) are all good. Definitely don't use passwords that can be guessed at by looking at other stuff on your computer. And always have more than one virus protection software on your computer. Avast! failed me for the first time in two years. Try another one, or two, on top of it and together, you'll have a better chance of preventing serious damage.
Can't touch this. Hackers :P