Visual Editor broken in 3.5 upgrade

I’ve searched this topic and read other threads similar to this, but they all say to start my own thread.

Since the automatic upgrade to WordPress 3.5, my Visual Editor button is not working.

I’ve followed the advice in other threads, disabled plug ins, changed theme to default etc, and nothing works.

I am new to WordPress and don’t know anything about coding etc.

Is there anything else I can try, or is this a bug that WordPress will fix and I just need to wait?

Thanks