windows 10 very loud and very piercing beep twice 5 times a day

this has been happening for about 1.5 years. my computer will just randomly emit a very loud and very piercing beep. 99% of the time i'm not using it so i don't think my input has anything to do with it. 99.99% of the time it repeats the beep about 15-30 seconds later. note this is not happening when my computer boots up. it's while it's already running. i've attached a sound file of the beep. i used total recorder in software mode so it only records when it detects a sound so it will contain many beeps in fast succession.

I don't know what to expect, either. I don't recall anyone having a similar problem in the past. It may have little or nothing to do with the operating system.

Does you PC have an internal speaker that's used for BIOS beep codes, or is this coming from an external audio system that is connected to the PC?

The sound reminds me of a Mallory Sonalert.

i forgot to mention that it's definitely coming from the sound system. if i mute it after the first sound i never heard a second one. and i don't hear it ever with the sound muted. this computer is a real piece of #*$%. i wouldn't be surprised if this beeping is because of that even though it's only been happening about half the time i've owned it. here's some good advice don't buy from cyberpowerpc.com. i don't care how good of a deal they give you. they gave me a horrible computer with constant problems from day one. yes i could of and should of returned it but i didn't want the hassle. i'm definitely not ordering a computer over the internet again.

Since this mostly happens when you are away from the computer, you can use Process Monitor (Process Monitor - Windows Sysinternals | Microsoft Docs) and leave it running in the background. Then when you hear the sound you can stop the logging (click the magnifying glass next to the save button) and correlate with the time, looking for keywords like "audio."

I'm guessing if the computer is making loud beeps, you might have an issue with your computer's hardware.

okay first of all thank you SO MUCH for the amount and quality of advice. who knew i would get more help from a 3rd party unofficial windows 10 forum then i got from an official windows forum. i will try both the process monitor and disabling the microphone advice.

okay i went into sound i disabled everything that wasn't the default in use. i went to record and disabled everything even though only a microphone i had plugged in and forgot was engaged but i almost never have it plugged in so i doubt it's the problem but i disabled it anyway. i'll install process monitor overnight as well as record with total recorder to make sure it beeps overnight it will record it but i'm sure it will.