Random popups while watching videos

If you get another, make a note of the web address that it points to and post it here, and anything else that you think may be of use in identifying the source.

Thanks for all your help. My computer restarted on it's own and when it booted back into Windows, I couldn't access the Internet anymore. I checked my modem, router, and ethernet driver and those were all working properly. I ended up reformatting the computer and reinstalling everything. Once again, Thank you very much for your help Novicate!