Beeping Sound From My Pc

Today I noticed a beeping sound coming from my pc.(You know the sound it makes when its booting up). the first & second time it was just “beep”. then after a couple of hours it was like “beep beep”. Can anybody tell me whats this about.

is it booting up ?

if not these beeps are error codes to indicate why its not POSTing booting up and can be found easily usually on gogole for example 3 short beps and nothing no boot up might indicate check yuor ram.