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3 Posts

11-18-2011

Canada

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T420 - delete key gets pressed when screen/lid is closed

2011-11-18, 18:44 PM

Anyone run into this?

I work at a large company and so far we have recieved a bunch of laptops where the delete key gets pressed if the lid is closed.

I have tried replacing the KB but issue persists.

Upon closer investigation, the DEL key does seem a bit raised when compared to other keys on the KB.

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9644 Posts

12-27-2009

Canada

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Re: T420 - delete key gets pressed when screen/lid is closed

2011-11-18, 23:03 PM
Strange, the DEL key is level for me.

Have you updated your BIOS and drivers? I believe there was a change made where the keyboard will be deactivated when the lid is closed.

W520: 2960XM, Q2000M @ 1091/1380, 32GB RAM, 500GB&750GB HDD & 500GB SSD, FHD&MB168B+
X61T: L7500, 4GB RAM, 500GB HDD, XGA screen, Ultrabase
W550s: 5600U, K620M at 1164/1281, 16GB RAM, 512GB SSD, 3K touchscreen
X200s: SL9400, 6GB RAM, 64GB SD card, WXGA+ screen
TPT1: 1839-23U
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315 Posts

02-21-2008

Singapore

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Re: T420 - delete key gets pressed when screen/lid is closed

2011-11-19, 2:40 AM

take out the delete key and see if there is a crump or fingernail underneath, its very simple to do and safe. Lift the top end of the keyand pull down towards you.

 

Take out another key of the similar size (on the same laptop) and exchange position and see if the problem persist. If the problem is gone, exchange delete keys with another laptop with the same problem. Probably some tolerance at the right hand side hinge

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21115 Posts

12-20-2008

Australia, Melbourne

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Re: T420 - delete key gets pressed when screen/lid is closed

2011-11-19, 14:56 PM
try to reseat the kb by taking it off and then putting it back in.
Regards,

Jin Li

May this year, be the year of 'DO'!

I am a volunteer, and not a paid staff of Lenovo or Microsoft
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3 Posts

11-18-2011

Canada

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Re: T420 - delete key gets pressed when screen/lid is closed

2011-11-21, 14:31 PM

I have managed to fix some of these by replacing the KB while others just continued to do the same thing so i figure those had issues with the MoBo. In anycase, I'll try the bios update as recommended.

Thanks

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273 Posts

01-24-2011

Columbus, OH

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Re: T420 - delete key gets pressed when screen/lid is closed

2011-11-22, 15:07 PM

wrote:
Strange, the DEL key is level for me.

Have you updated your BIOS and drivers? I believe there was a change made where the keyboard will be deactivated when the lid is closed.

 

Problem: On the listed ThinkPad systems, the delete key might be pressed and activated when the LCD is closed and the system is held tightly when carried..

Affected Systems: ThinkPad T420, T420i, T420s, T520, W520, X220, X220t.

Solution: Please update the BIOS to the version listed below, or newer. The BIOS can be downloaded from:

T420/T420 (ver. 1.33): http://support.lenovo.com/en_US/downloads/detail.page?LegacyDocID=MIGR-77071 .
T420s/T420si (ver. 1.29): http://support.lenovo.com/en_US/downloads/detail.page?LegacyDocID=MIGR-77010
T520/T520i (ver. 1.32): http://support.lenovo.com/en_US/downloads/detail.page?LegacyDocID=MIGR-77001
W520 (ver. 1.30): http://support.lenovo.com/en_US/downloads/detail.page?LegacyDocID=MIGR-77033
X220/X220i/X220T (ver. 1.22) http://support.lenovo.com/en_US/downloads/detail.page?LegacyDocID=MIGR-77150:

 

As noted previsouly in another post, if the wireless antenna wires are not routed neatly underneath, the keyboard will stick up just enough for the screen to press on those keys.

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2 Posts

02-22-2012

Los Angeles

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Re: T420 - delete key gets pressed when screen/lid is closed

2012-02-22, 2:43 AM

Yes!!!!  I didn't know why my text was being deleted.  I'm a court reporter and thought it was a software glitch.  But it just did it to a Word document.  Thank God I know what the problem is now.    did you figure out a solution for this? 

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273 Posts

01-24-2011

Columbus, OH

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Re: T420 - delete key gets pressed when screen/lid is closed

2012-02-22, 3:15 AM
Update your BIOS Marea
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2 Posts

02-22-2012

Los Angeles

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Re: T420 - delete key gets pressed when screen/lid is closed

2012-02-22, 3:24 AM
Thank you! I should have read to the bottom of the thread before posting. haha :)
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1 Posts

01-24-2013

Little Rock, AR

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  • Message 10 of 11

Re: T420 - delete key gets pressed when screen/lid is closed

2013-01-24, 15:31 PM

I have this problem on the same T420s. I can literally take my finger and barely press the screen where the DELETE key is and whatever is highlighted, it deletes it. How is updating the BIOS going to change a physical problem unless there is a setting that when the lid is closed, no object can be selected???

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