One short beep from the speaker means the device boots normally. Power Light is ON, "One short beep" from speaker but nothing shows on monitor. (Please refer to the motherboard manual for the speaker's correct location). When the buzzer is properly installed, please power on and follow the sound emitted by the buzzer.Most devices nowadays are using switched mode power supplies which adjust the switching frequency depending on the load (the power. I have an LG monitor which does the same. You say it is more audible when in stand-by and in-sync with the power LED. The sound is coming from the power supply of the monitor.
Re: Dell U2413 monitor - high pitched whine In reply to Roy Sletcher.If you sit the suggested 3-4ft away from the monitor you will barely notice it. Also the backlight bleed is much much less then what i have been seeing online. My Dell U2713HM Rev 01 made in April seems to not have any high pitch noise. To resolve this, go to your Device Manager, right-click "Dell Wireless 350 Bluetooth Module" (at least, that's what it's called on my machine), and select properties. As a result, the Bluetooth device turns off, and this evidently allows the processor to move into a C3 state, thus causing the high-pitched noise.I've looked around for solutions on google, and most of them said to increase or decrease the monitor's refresh rate, but when I go to do that, my monitor only has 1 refresh rate, and there are no options. Most of the time when I play a game in full screen, my monitor starts making a really high pitched noise that is VERY annoying to the ears.Any idea what mabe happening? Thanks Thumbs Up Usual lasts just a few seconds but has lasted up to 30 seconds. It starts and stops on its own or if I turn the monitor off and on again it is gone. Hello I have a 17" Dell monitor (CRT) that sometimes makes a high pitched sound.
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