The T410 / X201, the built in microphone couples with the speakers and generates annoying high pitched noise or audio feedback when microphone is unmuted.
Issue is caused by the microphone settings being too sensitive then picking up the audio which is coming from the speakers thus causing high pitch or audio feedback.
Do ensure that the Audio drivers are installed before proceeding with the steps provided below.
Disabling Microphone Boost
If issue still occur after unchecking the "Listen to this Device". You can try reducing the microphone boost in the Levels tab. Screenshot below
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