Ringing sound while switching on the laptop

[Apeksha_Agase]

Product name: HP au620TX

Strange sound like telephone ringing is producing while turning on the laptop. 

Please help me

[KrazyToad]

@Apeksha_Agase

Welcome to HP Community

I have gone through your Post and would like to help

Does it happen before Windows start loading or after?

Please restore the BIOS back to default and check

1. Turn off the computer and wait five seconds.

2. Press the Power button to start the computer and repeatedly press the F10 key to enter the BIOS setup menu.

3. On the BIOS Setup screen, press F9 to select and load the BIOS Setup Default settings.

4. Press F10 to Save and Exit.

5. Use the arrow keys to select Yes, then press Enter when asked Exit Saving Changes?

6. Follow the prompts to restart your computer.

Also run an extensive System Test to confirm the Hardware Functionality

- Shut down the Notebook completely
- Turn it back on, then tap the Esc key repeatedly until the Startup menu screen is displayed.
- Press F2 to select System Diagnostics.
- Click System Tests, then click Extensive Test.
 

Keep me posted

If the information I've provided was helpful, give us some reinforcement by clicking the "Solution Accepted" on this Post and it will also help other community members with similar issue.