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Acer Aspire 5742, developed a loud high pitched screaming noise, which seems to be coming from the speakers or microphone. Adjusting in control panel makes no difference. It will stop if I open and close the screen several times. This noise comes intermittently when connected to the net or not. Cannot speak on skype as the screech is too loud. Can anyone help please

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Could be a bad fan assembly.

Posted on Sep 09, 2017

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Posted on Jan 02, 2017

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SOURCE: My Acer Aspire 5742 developed

High pitch buzz is usually caused by the system fan but can also be caused by the optical drive and the harddrive. check if the system is getting hot. try cleaning the vents of the system. verify that there is no disc inside the optical drive. try booting to safemode and check if the system will still caused the noise. also run a hardware diagnostic to check the fan and harddrive.

Posted on Mar 27, 2011

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High pitch noise from speakers


Hello there!
Sometimes High pitching its just that, static on the area, like if you are near a microwave, or near other electronic equipments, but, if the skreetching sound keep going or even if you do nothing it could be a line inside the sound card, or you need to clean the volume botton with special electrical cleaner. other that these, its contacts, or bad cap for the volume board inside.
Good Luck!
Carl

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Might be feedback coming in from microphone. Make sure to mute mic if you have one.

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Change speaker settings from headphone to desktop speakers and see if thats not the cure. Let me know : expert-tech / SAM

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My acer laptop is making a continuous loud high pitched siren sound.


Hi,
Is it turning ON? if nothing shows on the screen then the loud noise happens then possible it is something hardware in your system.
If the noise is coming from the speakers and windows loads then that is a speaker issue.
Better check with acer if the laptop is still in warranty for repairs and proper checking.

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My Acer Aspire 5742 developed a screaming high pitched buzz. This happens even when it is not connected to the net, or even when there is no dongle attached. This has developed since we used a Virgin...


High pitch buzz is usually caused by the system fan but can also be caused by the optical drive and the harddrive. check if the system is getting hot. try cleaning the vents of the system. verify that there is no disc inside the optical drive. try booting to safemode and check if the system will still caused the noise. also run a hardware diagnostic to check the fan and harddrive.

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Check your sound setting first

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Recording and sound card


Reinstalling your software for soundcard may help solve your problem. :)

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When you open the sound control panel, is the mic muted or turned down? The feedback may have been coming from the built-in microphone?

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