Please try to boot your PC to safemode and check if you can still hear the noise from there.
Here is the link on how to boot to Safemode.
https://support.microsoft.com/en-us/windows/sta...
If you do not hear anything on safemode then it might be software related. But if you still hear it in Safemode then it might be a hardware problem.
Also please try to boot to Sysrtem BIOS and check if you can hear the noise there as well.
Here is how to boot to BIOS.
https://docs.microsoft.com/en-us/windows-hardwa...
IF in case the noise is present in BIOS, the hardware itself is causing the problem, it may the audio card on the system board itself