Motherboard help!

just today i started to get 3 quick beeps while starting up however everything is running fine hell im posting from the pc it happened on! but i for one know beeping isn't anything good but after searching 30+ websites i cant find beeping codes any where, not even on there support site! manual says (for bios beeping codes look below) well guess what, its blank below it.

Motherboard is a Asus p5n-d if any other info is needed lemme know!

erm, if everything is fine, i wouldn't worry about it. then again, it could be something terrible, i dont know.