How to solve the problem of laptop current noise

How to solve the noise of laptop current?

First we need to determine where the laptop’s current sound comes from. The first step is to turn off the laptop’s microphone to rule out whether it is the microphone. Set the settings as shown below

If the above settings don't work, then we need to confirm whether it is a problem with your external power supply. We first remove the laptop battery, then connect it to the power supply and try to see if there is any current sound. If there is still sound, we will change it, connect the battery, remove the external power supply, and try again.

If none of the above methods work, congratulations, it may be a batch problem with your computer. Check your laptop model on Baidu to see if this common problem exists.

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