Problem description: Analysis of the causes of noise in the sound: 1. There is electromagnetic interference next to the sound output device 2. The sound output device is aging 3. Sound-related hardware acceleration setting problems Simple steps: Start-Run-Enter dxdiag-Return Car - Sound - Hardware sound acceleration level - Adjust to the basic acceleration solution: Solution 1: There is electromagnetic interference next to the sound output device, poor audio interface contact, etc., such as: mobile phone interference, speaker interface is not plugged in firmly, etc. Solution 2: The sound output equipment is aging. If the sound is too loud, it will make a howling sound. Replace the sound output equipment such as speakers. Option 3: Sound-related hardware acceleration setting issues. 1. Click Start-Run. (As shown in Figure 1) Figure 12. Then enter dxdiag in the run window, directly hit the Enter key on the keyboard or click the OK button below. (As shown in Figure 2) Figure 23. After the pop-up window, select sound—pull the sound acceleration level of the hardware to the left and adjust it to basic acceleration. (As shown in Figure 3) Figure 3