High pitch noise from laptop

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I tried switching all other electronic appliances off in my room to eliminate inteference, then play music to the speaker using my phone - the problem still exists, though not as noticable. The audio is crystal clear with my earphones. Using the same soundcard, I connected my earphones to it and there is no such probem. The high frequency noise has constant pitch, but alternatives between on and off randomly, like someone is playing with a switch.ģ. I'm sure it comes from the speaker because the noise disappears the instant I switch the power of my speakers off.Ģ. I tried very hard to troubleshoot it but I can't.

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I can hear a very high frequency coming from my speakers from time to time.

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�I have a very annoying issue and I'm looking for someone to help me.