Question about HP ProBook 4510s Notebook

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Keyboard - certain keys not working anymore

Recently I have lost the use of some of my keys, specifically the first row - Q to P? How and why would some keys work and others not? How would I go about fixing this? I have already tried updating the drivers.

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  • HP Master
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To determine if it is a motherboard fault or a faulty keyboard, connect an USB keyboard to your laptop. If the external keyboard functions normally the the laptop keyboard is faulty and needs replacing.
A replacement keyboard maybe available from this WEB site.
Keyboard replacement, LCD screens for mobile phones, Ipods and computer equipment.
http://www.yallstore.com/index.php?main_page=advanced_search_result&search_in_description=1&zenid=1lrjst3ncshlb4c7frn9bev3c3&keyword=keyboards

Posted on May 03, 2013

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SOURCE: internal keyboard , shit key, uppercase numeric keys, don't work

don't forget to bring a towel

Posted on Oct 24, 2008

farhangM
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SOURCE: Several letters on a keyboard have stopped working

Bring it back to the repair shop. They should replace the keyboard.

Posted on Dec 02, 2008

Srikanth Kos
  • 69 Answers

SOURCE: my second row of keys on the keyboard will not

The issue could be with many cause. In order to isolate this issue I request you to perform the below steps :

====================CLEANING KEYBOARD============

To get started, find a soft, lint-free cloth and some window cleaner like Windex. Turn laptop upside down and give it a gentle shake. This will clear out dust and debris that has fallen in between the keys. If your vacuum has a soft brush attachment, you can vacuum the keyboard gently, too.

Now, spray a tiny bit of Windex on your cloth. You do not want it wet, just barely damp.

Gently scrub all the areas around the keys of your keyboard. Watch for an excess fluid squeezing out of your cloth. Should this happen, dab it up quickly.

Once the housing for the keys is cleaned, focus on cleaning the keys themselves. Gently stroke the keys with the barely damp cloth, repeating strokes until each key is cleaned.

Badly soiled keys can be (try and if are not difficult to pull them out do not attempt) pried off the board, cleaned and snapped back into place.

You can clean crevices by wrapping your cloth over a table knife and carefully and gently running it between keys. Do not push down into the mechanisms below the keys, though.

Once you have cleaned the keyboard to your satisfaction, let it set to dry for half an hour, just in case it is damp.

Also note that office supply stores sell cans of air. It's not just air; it's air that comes out of the can with enough pressure to push dust out of places it shouldn't be. The cans come with little straw-like tubes that you can attach to the sprayer so that you can get inside your removable drives and between the keys of your keyboard.

*** Uninstall and reinstall Device drivers from Device Manager ***

1. Click Start, type Device Manager in search field.
2. Click on Device Manager.
3. Click "+" beside Keyboards Device Category.
4. Right-click the listed Keyboard and select Uninstall.
5. Restart the system.

Windows will redetect the device on restart and reinstalls the drivers automatically.

Posted on May 16, 2010

  • 2385 Answers

SOURCE: I have a zd 7140us from HP my keyboard is messed

if the keyboard is fine and you checked on other computer then it shows that the application you are working has gone corrupt, try to re-install OS and application software.
Also try to check with USB/External Keyboard..

Posted on Nov 24, 2010

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The keyboard itself is defective. The keys are "strung" together in groupings. The T just happens to be on another string then the top row.. To verify you can easly hook up an external keyboard and verify that it works. Once verified it all works then the problem itself will be in the keyboard. Replace the keyboard. You can easly find them online and are not that expensive or hard to replace.

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If only specific keys are not working, something is obstructing those keys\' pickups which are located immediately beneath the keys. This is almost always caused by food debris or liquid spillage as dust doesn\'t provide particles big enough to cause issues.

If those four keys feel "funny" when being pressed, it\'s almost certainly a physical obstruction. If they feel "sticky" it\'s always a liquid spill. If you don\'t recall spilling anything over the keyboard, use a can of compressed air (found at office supply stores).



Turn the keyboard long side up, with the keys leaning slightly downward. Place the air nozzle close to the intersections of the keyboard, starting at one side and work your way to the other side, using short bursts of air. Repeat for every row of keys. Pay special attention to the four that do not currently work.

You\'ll probably see lots of junk fall out of the keyboard. That\'s good, if so--I would then retest the keyboard (no need to reboot the computer). That should fix it--if not, you may have to resort to pulling off the keys that don\'t work. The next possibility would be broken key hinges, but that\'s beyond the scope of this reply.



For liquids, cleaning is hit or miss. If left long enough, liquids will eat away at the circuits, or provide a short circuit and kill the component. Since only four keys are affected, I\'m really leaning towards food debris, but if you did spill a liquid, you can disassemble the keyboard and clean up any residue under and around the keys. Probably best to use rubbing alcohol and a q-tip for that--but if you\'re not comfortable taking stuff like this apart, it might be time for a new keyboard, or find a handy friend. Good luck!

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How do I enable a compaq laptop's keys


Compaq Presario computers provide users with a row of function keys for added keyboard functionality. Function keys can serve a dual purpose as well.
Function keys are located at the top of Compaq Presario keyboards.
By learning how function keys work on a Compaq Presario you can take advantage of time saving keyboard shortcuts.Purpose
Use function keys to access menus, save changes and create shortcut keys.
Various applications, including Microsoft Office, allow you to select a function key as a shortcut key for running specific tasks. These settings are usually found under the Tools, Settings or File menu.
Each Compaq Presario computer has twelve function keys.
The most common used keys are "F2," "F8," "F10" and "F12."
The first three are used mainly to access and use the Compaq BIOS. "F12" is used to access a set of run from options during the boot process.

How to Access
Access function keys on a Compaq Presario by pressing any of the keys on the top row of the keyboard. Access the key's dual purpose by first pressing the "Fn" key located on the bottom row of keys.
Use function keys as shortcut keys by pressing them anytime while in the desired application. Remember, you must set them as shortcut keys first.
Note that some programs may already have certain function keys set as shortcuts.
Open menus and view the shortcut keys beside each menu item before setting your own shortcuts.


Dual Uses Each function key has a dual use. Press "Fn" plus the desired function key for the key's other use.
Below each function number is a small picture within a square or rectangle.
This dictates the dual use. "F1" opens help and support. "F2" serves as a printer shortcut.
Open your homepage by pressing "F3."
If you use dual monitors, switch between monitors by using "F4." "F5" puts your computer in stand-by mode.
Quickly lock your computer by pressing "F6." "F7" and "F8" adjust the screen's contrast.
Play and pause your music in Windows Media Player or other default media player by using "F9."
Press "F10" to stop playing media. Skip ahead or rewind media by using "F11" and "F12."

Other "Fn" Keys

In addition to function keys, the "Fn" key is also provides other keys with a dual use.
Any key with a small square on the key has a dual purpose such as the "scroll," "insert" and "delete" buttons.
Since laptop keyboards have no number pads, certain keys serve as the number pad by pressing the "Fn" key.



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Certain keys are not working like h f g all on the same row


hi,

try to do a system restore gong back to the time that its properly working,that's the way for you to be able to isolate if its a software or the hardware itself. Once youre done doing system restore and the keys are still not working,that means that the problem is with the hardware itself, most computer manufacturer usually replaced the whole keyboard of the laptop since there is no part no or available part for just a particular key on the keyboard.


Hope this will help... Please rate...

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if you go into ctrl panel to system..hardware..device manager..select your keyboard from the list and you should be able to roll back the driver

Dont forget to rate the advice.
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Generally when a row goes out the keyboard is shot and needs replaced. How did you rule out hardware issue?

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