Windows 7: my computer is making weird noises

my secondary pc thats a bit old p4 2.4ghz 512mb ram ive put windows 7 on there and it works great for the specs(although no arrow)

so this pc is making weird noises with the internal speaker the one thats attached to the mobo. it makes those beeping noises but in sequence almost like a 8 bit video game. its odd because it beeps but im sure nothing is wrong with the pc its ram and cpu is not maxed the temp is good and i have an extra fan in there yet it beeps repeatedly its annoying. i dont think anything is wrong with the pc but i donno. i just think the internal speaker is glitching. should i just cut the wire so it stops or what?

help would be appreciated

check your cmos battery ,it could be a low battery alarm

What is the sequence?

Number of beeps between pauses.

This could be a fault or error warning, or battery as pebbly mentioned.

its totally random. like just nonsense beeping. sometimes it will stop and then once i click something it will beep again and its very random theres no specific beep its just gibberish beeping