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Shift Keys not working properly on ACER notebook

Hi,

Not sure if the problem im having is a hardware problem so here go's.

I have a ACER TravelMate 4050 notebook (WinXP), about 2 weeks ago I started having some strang problem with my 2 "Shift" keys, it works but it does not work properly. The left "Shift" key only works on a random set of keys (first half of keyboard) and the right "Shift" key only works with anther random set of keys (second half of keyboard) eg.

Key's that work on left "Shift"
QWERTYUIOPGHBN

Key's that work on right "Shift"
TYGHZXCVBNM As u can see the ASDFJKL keys does not work at all. the only way for me to insert a Caps letter is by useing the Caps Lock and all other keys works fine. Here is another example, neither one of my shift keys work when trying to insert a colon (:), I have to hold in both shift keys at the same time to be able to insert a colon (:)

I resontly formated and reinstall XP and ja gues what I'm still having the same strange problem.

PLEASE assist

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  • 2 more comments 
  • Chris Liebenberg Dec 13, 2008

    Nop no changes were made used it as normal and i did nothing to the hardware it as been on my desk and havent been moved sins. As i sad i resontly formated my HDD and reinstalled Windows XP and the problem still exists

  • Chris Liebenberg Dec 14, 2008

    AAA dam thats not good, thanks freetek this helps me alot cool

  • mikemcgettig Apr 25, 2009

    i have the exact same problem and have been searching for a solution for weeks. i don't think this is a hardware problem, rather it seems to be a problem related to the driver. my keys that aren't working are the same as the above. there must be a solution for this, somewhere.

  • Mark Kessler May 11, 2010

    Were any changes made to your computer just prior to the problem occuring? Was there any software or hardware recently installed?

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  • Acer Master
  • 5,568 Answers

The 8042 keyboard controller has been integrated into one chip with other I/O functions so I doubt you can replace it as a single IC and I'm afraid that is what has failed. It is an extremely rare failure but I guess it has to happen some time. The keyboard is kind of a polled matrix so it only takes the failure of a single line to bollix things up.
I think what you are talking about here is a motherboard exchange or repair.  

Posted on Dec 13, 2008

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Posted on Jan 02, 2017

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