Question Computer Randomly "Long Beep" in speaker inside CPU when Windows Running idle

[Indra Constantine]

I just let's my computer idle, while i playing Wild Rift in my phone, in front my computer for 30 minutes.
The computer works and runs fine but randomly inside the computer will "long beep" about 3-7 Second.

How do i know what problem is this?

NOTES:
I lives in Indoesian if someone here lives from indonesian too, as you know electricity here often goes up and down in some areas (maybe this one relevant about my issue)

Software:
• Microsoft Windows 10 Professional (x64) Build 19044.1826 (21H2) [Installed From 29 July 2022]

My Full Component:
• Processor: Intel(R) Core i3 CPU 10105F (Buy 29 July 2022) (NONE OC)
• Cooling: ALSEYE AM-90
• Motherboard: MSI H510M-A PRO (Buy 29 July 2022) (NONE OC)
• GPU: Sapphire RX 550 Pulse (Buy 24 July 2021) (NONE OC)
• PSU: GAMEMAX 550W GP-550 - 80+ Bronze (Buy 12 October 2021)
• Memory: Kingston 12 GB DDR4 2666Mhz (4+8 Dual Channel) (Buy 06 August 2022) (NONE OC)
• HDD: 1x2 (500GB + 1TB) 7200RPM (Buy 31 January 2022) Status Still Green in HDD Sentinel
• SSD SATA 120GB (Buy 15 July 2020) Status Still Green in HDD Sentinel
• 2 Monitors Running

in USB slot:
1x Mouse USB THOR x9 Fantech
1x Keyboard USB Fantech HUNTER PRO K511
1x USB TP Link Bluetooth
1x USB TP Link Wifi
1x Capture Card Device Connected to Playstation 4

 

[helpstar]

check the event viewer of windows at the time of the beep
is the beep the same while booting the PC?

 

[MJS WARLORD]

Hello indra i dont know if this will be of any help , i once had this happen to me and when i looked in device manage their was a yellow triangle next to the cd/dvd icon , when i looked in " this pc " the dvd/cd icon was not showing .

if this is your problem you might want to read this article.

7 Best Ways to Fix CD/DVD Missing or Not Showing Up in Windows 10/8/7

Here are 7 best ways that proved to be able to fix your CD/DVD disc drive missing or not showing up in file explorer, disk management or device manager after Windows 10 update. Apply each of the solutions until the CD/DVD drive icon is back on your Windows computer.

www.easeus.com

IMPORTANT ....... i note you say your electricity supply is not reliable so i think you need to get something called a surge protector and plug all your equipment into it , worse case senario you get more power into your home than you should and everything goes bang and not just your pc.

look at this some even give a free insurance cover if the device fails

Amazon.co.uk : surge-protectors