I have an Acer Aspire 7720G laptop and my integrated soundcard just started emitting alarm-like sound. The card itself is Realtek ALC268. The sound can be heard as soon as UEFI finishes loading.
Form what I've heard, such sounds are commonly related to CPU overheating, but all temperatures are fine. Any ideas what could be the cause and how to fix it?
I'm currently planning to remove the audio front panel as I'm hoping that it will stop the beeping and allow me to use an external sound card.
EDIT: I also noticed that the front panel won't switch from electrical to optical mode. It used to do this when a non-conductive 3.5 mm plug is inserted even before OS loads. I may be facing a hardware failure here.
UPDATE: The audio board isn't the cause. I removed it and the beeps (which now sound more like ticks) are still audible. I also noticed that the problem may be software related. After I disabled the sound card in Windows and rebooted, the sound stopped after Windows started loading.
I'll try with BIOS reflashing next.