Strange and annoing beep during linux boot

Hello, i am new to linux net runner. The installation was ok, but after a couple of times while loading the operating system, i hear a 2-3 seconds beep, which drives me crazy. Recently my battery got broken and i think linux reminds that i have a problem. Had this problem with other linux distros too. Is there anyway to disable this sound? Have no such a sound when loading Windows OS.