Does anybody have any idea?

I was working in PS7 earlier today and I had no problem. But when I was working with it just now, I went to add text to my icon, but all of my fonts are gone! My font list on PS only goes up to the letter G. The fonts are still in my font folder, but they're not in PS. Has this happened to anyone before? Is there a way to fix it?  I checked the troubleshooting section in the mems but couldn't find anything.

Thanks in advance!

Greens