I don't have Facebook, Gmail, or instant messaging, but maybe it is a flash ad of some type.
The chiming happens with Safari but not with TFF. This is good news, since it means that it’s not a hardware issue, which is what I was worried about when I started this thread.
The bad part is that TFF looks similar to Windows 10. The good part is that it works better with my online classes. A certificate that I needed proving that I took a class would not print completely with either Safari (at home) or Windows 10 (at work). The part in the middle with the proof on it would only print as a series of colons. It printed off just fine using TFF.
The chiming on Safari may stop after a few days like it did last time, but this little adventure was worth it because now I can prove that I’ve taken the classes.
Thank you!