Some days ago I just started to see dollar signs instead of any latex equation what should I do now I use a windows 7 pc and I have switched my browser many times and cleared cache none of them seemed to work
my internet speed is also not slow
I suggest trying robJohn's ChatJax script bookmarklet on pages where MathJax is not rendering. The script is so named because MathJax is not enabled by default in chat rooms.
This will give us some diagnostic information, one way or the other.