X220 highpitch noise source

Specs of computer:
X220
core i5 2520M
16gb ram
windows 7 ultimate
After a lot of testing and debugging, I believe I've determined the source of the high pitch noise found on many X220's and 2nd gen core i processors. A clean install of windows 7 results in no high pitch noise. As soon as Lenovo's power management driver is installed, the high pitch starts. This is not a fan noise, this is definitely electrical buzzing coming from some high frequency inductor switching. Battery life was the same in both partitions of windows.
The challenge is completely removing the lenovo power management without reinstalling windows. I can't figure out how to completely remove the lenovo PM driver in the device manager.
I've tried uninstalling power management in add remove programs as well as in the device manager however upon restart, windows automatically installs the lenovo PM.
I imagine the solution lies in some registry key modifications. Someone from the lenovo tech team is going to have to help us figureout how to completely uninstall the lenovo PM driver.

I personally didn't install Lenovo Power Management on my X220t. However, installing the Lenovo Power Management Driver was required in order to make the ThinkPad Hotkey Features Integration Package operate (dependency).
As for the uninstallation of LPM, you may want to read this page (search Uninstallation Instructions) : http://support.lenovo.com/en_US/detail.page?LegacyDocID=MIGR-70601
Lenovo states: "4. Select Power Manager Driver, and click Uninstall or Uninstall/Change.", but I don't agree with this, for the reason I mentionned above (unless you find something like Power Manager Driver in your list of installed programs. In my own list I have nothing like that, of course, just the required Lenovo Power Management Driver).
Anyway, a clean install is the best thing to do if you wish to get rid of all problems.
X220t | i7 | 320GB HDD | 8GB RAM | WIN7 PRO
IdeaCenter A520 | i5 | 1 TB HDD | 6GB RAM | WIN8.1

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Attachments:
noise.txt ‏2 KB

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Attachments:
setup.png ‏23 KB
no switch.PNG ‏72 KB
with switch (2).PNG ‏75 KB

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Message was edited by: Limnos

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Harry Katz wrote:
I am brand new to Logic Pro, like just installed it an hour ago. Could anyone direct me in the menus to the place I need to go to be able to record without that background noise?
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