What should I do if all the sounds of the Win7 flagship edition system are noisy?

The Windows 7 flagship edition has various sounds. What should I do? Every time I install Windows 7 flagship edition, there is a noise. XP is not used in the past, and it is definitely not a speaker problem. Changing drivers such as rising sound card to the latest version and earlier versions cannot solve this problem. What should I do? Www.2cto.com: try to reduce the sampling frequency and bit depth of the Speaker. In "sound --- speaker --- properties --- advanced --- default format", change it to "16 bits, 4410Hz (CD sound quality), click the test button on the right to see if there is any noise, and adjust the microphone in "sound --- recording --- microphone --- attribute --- level" to 0. If it still does not work, download and refresh the latest BIOS firmware of the motherboard, because the sound sometimes has a lot to do with the BIOS of the motherboard.