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Laptop Keys No Always Working

Hi,

I have a laptop that has keys that will sporadically work & then not work.

e.g. When writing a Word doc or an email some of the letters will not type. It isn't a specific letter/key either. It is a Win7 laptop & there hasn't been any spillages or physical damage, & I have changed the keyboard settings (repeat delay/rate etc...) in the control panel, but no joy.

Has anyone have any ideas as to what is the problem?
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craigaddison
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craigaddison
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2 Solutions
 
Gerwin Jansen, EE MVETopic Advisor Commented:
Can you try an external (USB) keyboard instead and see if that has the same issue? If not then it's probably hardware related.
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Owen RubinPrincipalCommented:
Well, I need a better description of the failure to understand fully. But here are some guesses:

Could be a bad or loose cable from the keyboard to the motherboard, or the connector has let the cable come loose. You did not say what make, but many laptops have a very flat and thin ribbon cable that attaches the keyboard to the motherboard. Many are held in place by a small connector that you insert the flat cable into, and then press down on the edge surrounding the cable, and it locks into place.  Sometimes these work loose, and the cable can move, causing it to work intermittently.

IF, and this is a big IF you are comfortable opening the laptop up to be able to see the cable, you might be able to re-seat the cable. Again, without knowing the exact laptop (and even if I did, it might not help) I cannot say for sure, but that is typical.

If that is not the problem, the keyboard may just have a bad part and be malfunctioning. Or if old, it could just be wearing out. These are small switches you know.  You can Google your laptop and "replacement keyboard" and you can typically find instructions for replacing the keyboard, which will show you how to re-seat the cable as well as buy and replace the keyboard.

You might also try an external USB or Wireless (if your laptop supports it) keyboard and see if you still have the problem. That would at least let you know if it is a strange system problem, or a bad keyboard.

If it stops, as opposed to just missing a few letters, then it  might be software as well. You could have a virus which is slowing down the keyboard, or a key logger virus that is interfering with some programs ability to see all keys.

Does it just stop for some time? Does it simply miss a few letters? Does it hang? More clues please.
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craigaddisonAuthor Commented:
It just misses a few letters here and there (1 every 10 or so), no hanging or stopping.
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Gerwin Jansen, EE MVETopic Advisor Commented:
I suspect hardware, can you try an external kb as I suggested?
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craigaddisonAuthor Commented:
I will try ext keyboard tomorrow & update with the results.
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craigaddisonAuthor Commented:
Laptop works fine with external keyboard. All keys register no matter how fast I type.
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Gerwin Jansen, EE MVETopic Advisor Commented:
Ok, then something must be wrong with your laptop's internal keyboard/hardware. Do you still have warranty on your laptop? If so, you could take it back to the store for repair. If you don't have warranty, a local computer shop may help you in checking (internal) cabling (or do this yourself if you're handy enough).
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craigaddisonAuthor Commented:
Is it definitely hardware related?
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Gerwin Jansen, EE MVETopic Advisor Commented:
Do you still have warranty? Of course there is no way to be 100% sure but since the external KB is working fine I'd have the hardware (internal kb / connector etc.) checked. In canse you have warranty, just take it back, if not I'd go to a local computer shop.
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craigaddisonAuthor Commented:
I don't need a computer shop, I can pull it apart myself. I just didn't want to go down that route unless absolutely necessary.

Thanks for the replies.
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craigaddisonAuthor Commented:
Thanks.
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