i had the same problem on my gigabyte 8IPE1000 Pro (865 chipset)
It would start beeping sometimes, and the beets would come from in the PC speaker and wouldn't stop
and my temp was only 37c.
I found the fix for it. You need to go under your pc health and turn off the rpm monitoring of all your fans.
also turn off the smart monitoring for your cpu fan.
and you won't have any more beeping.
