First thing is to check the battery, the no beep could be from a few things, some as simple as a dead battery, to a bad speaker, to computer issues...
The fan noise may be from the blower for the engine compartment, sounds like it was left on, do you know when the last time it was ran?
Turn off the switch for the blower, check/charge up/replace the battery, if needed, and give her another turn. Hope that solves your problem.