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View Full Version : Slight beeping noise while charging



Jfaden23
01-29-2012, 08:02 AM
Hey guys,

Recently I noticed a small irregular beeping noise coming from my g74sx laptop while it is plugged into the charger. It sounds like it's coming from some hardware in the computer, I don't think it is the speakers (unless this bypasses speakers when they
are muted). It is a solid beep for the most part with a couple breaks/skips within a 5 second period. Any idea what this is? Is it
normal? If you have the same laptop listen closely while it is charging. It's somewhat annoying now that I've realized it is doing
this, any help is appreciated, thanks in advance.

Edit: It only happens in AC mode and battery saving mode while plugged in, and my "quiet" office produces a different sound, almost like a dial up connection attempting to connect. Strange, I can't think of what setting I have through Power 4 Hybrid could make different modes make different noises, It seems to be coming from my top left, towards my esc key. High performance, Entertainment, battery saving make no noises at all.

dstrakele
01-29-2012, 08:33 AM
Is this what you are experiencing: http://www.youtube.com/watch?v=3mRrKDPJL7k? Could be a bad power supply, bad battery, or bad grounding. Does it occur if you try a different outlet? In a different building? If you remove the battery and use just the power adapter?

Here is another thread that discusses this issue: http://www.techsupportforum.com/forums/f108/beeping-sound-when-plugging-in-charger-524570.html It shows how to disable it, but I wonder if you are just masking a problem by doing that.

Do you see any relevant Errors or Warnings showing up in the System Event Log?

I have a G74SX-A1 and have never heard any beeps while charging (do it every day) from either the laptop or the power supply.

Jfaden23
01-29-2012, 09:39 AM
No it isnt a loud beep just a very faint one, almost as if you just got out of a loud basketball game in a gym, or a rock concert and your ears are ringing. Now it rarely beeps, but more often does the faint dial up sounding noise on certain AC modes

Jfaden23
01-29-2012, 05:38 PM
bump with 10 character minimum

Jfaden23
01-29-2012, 11:56 PM
http://perpetuallybored.com/2010/09/08/power-saving-states-and-the-high-pitched-noise-mystery/

dstrakele
01-30-2012, 12:38 AM
Very interesting, @Jfaden23! That would explain why you don't hear it on the higher performance modes.