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3 Posts

07-23-2011

Canada

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Edge E420 Whining Noise

2011-07-23, 23:14 PM

Hello,

 

Just received my e420. When I have the laptop running on battery, there is a terrible whining/piercing noise coming from the bottom left corner.

 

It is really annoying and hard to focus. When I have the laptop plugged in, there is no whining/piercing noise.

 

I was doing some research and lenovo had some issues with the i5 processor. My laptop contains that i5 processor.

 

Any help?

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9644 Posts

12-27-2009

CA

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Re: Edge E420 Whining Noise

2011-07-24, 2:07 AM
The newer Sandy Bridge chips are supposed to be less prone to this issue.

Try this out of the Knowledge Base and see if it helps:
http://forums.lenovo.com/t5/T400-T500-and-newer-T-series/T510-T410-W510-ThinkPad-high-pitched-whine/ta-p/478215

W520: 2960XM, Q2000M @ 1091/1380, 32GB RAM, 500GB&750GB HDD & 500GB SSD, FHD&MB168B+
X61T: L7500, 4GB RAM, 500GB HDD, XGA screen, Ultrabase
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3 Posts

07-23-2011

Canada

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Re: Edge E420 Whining Noise

2011-07-24, 3:20 AM

thanks for that link.

 

I was going to try it. But I read somewhere that when you disable that CPU thingy, your battery life is drained big time.

 

I will be calling Lenovo to follow up

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7 Posts

07-28-2011

Indonesia

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Re: Edge E420 Whining Noise

2011-08-02, 3:11 AM

Hello Chunks,

 

I'm in the same situation as you're. I also have an E420 with i5-2410m.

The noise is also coming from the bottom left corner.

As the KB pointed by Colonel O'Neil said, by disabling the CPU Power Management, the noise is gone.

 

Have you contacted Lenovo? How do they respond ?

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