Getting rid of that high pitch noise

I kinda stumbled on this by coinsidence. I noticed that if you stick two usb devices in the laptop, the noise goes away. I had my usb mouse plugged in and when I plugged in my USB jump drive, the noise just went away.

Try it out guys. Maybe someone out there can figure out something clever and do some USB hack or somthing like that [ ]

 

and for those who don't know what this post is about, refer here:

http://www.notebookreview.com/forums/topic.asp?TOPIC_ID=11518

Maybe I'm just a lucky one, but I still have not experienced such a noise in my M45

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You should not have to rig your laptop so it does not emit a high pitched noise. My opinion of course.






I know things, things that could get me killed


Thinkpad T41:
* 1.6Ghz Pentium M * 768Mb Memory * 40Gb Hitachi 7200RPM * Panasonic UJ-845-B DVD+RW *

 

Acutally, I've responded to previous posts by other users with a similar problem with different brands. It turns out that the Pentium M based notebooks (some) seem to emit this annoying high pitched noise. It also happened on an HP NX7000 I used to have over a year ago. I was in contact with one of HP's engineers and the problem was found to be a capacitor or resistor that was causing the noise. Their solution was to put some glue over the cap/res causing the problem. I don't know exactly what has happened with the problem since I have already returned my notebook.

Another way for the sound to disappear is to set your power management setting to Notebook/Laptop or any of the other settings. If set to Always On, the sound comes back. Plugging devices into the USB ports will also eliminate the noise as you have already discovered. Another thing to try is to disable power management for the USB ports in device manager. A user posted this as a possible workaround, but I couldn't try it since I already returned my notebook.

-Vb-