A bulb is easily replaced if you can fathom how to get at it to find the right sized replacement. The handbook (if available should cover bulb replacement).
The fan has nothing in common with the bulb except to share the same electricity supply. So, as 2 faults occuring together are unusual, the first thing to check is the supply fuse (probably in the supply plug).
Hope this helps.
Regards,
Keith
Keith, April 2008