No response on some keys.

hello
I experience a funny problem on my Powerbook G4, 12": occasionally, the keys "3", "e", "d", and "c" don't respond. I mean: when they decide to refuse, then ALL of them refuse to work simultaneously, and I don't get them back into kind collaboration. I succeeded a few time to get them back after turning offf the powerbook, and turning it on after a while - but that is not the way I would like to work with it...
I noticed that these keys are in one line on the keyboard. I thought already about the possibility of some mechanical obstruction, but my experience that it seems to cure if the powerbook is a few minutes off, seems to contradict this.
Any suggestion would be greatly appreciated.
Thomas

It sounds like a hardware problem to me. You could try doing a reinstall of the system to rule out any software problems, but that fact that it is intermittent and only effects some of the keyboard leads me to believe that it's hardware related. I'd try the reinstall anyway, just to make sure. Beyond that, all I can say is that it sounds like it needs something repaired.
Just a guess, but the problem could be heat related. See if cooling off the PowerBook without shutting it down restores the use of the keys. You might also try to see if sleeping the PowerBook restores use of the keys; that's at least faster than having to restart it.

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1. The computer's model number. If you require assistance locating this information, please reference this website: Locating the Model Number of the Computer
2. The computer's operating system. If you require assistance locating this information, please reference this website to determine your Windows operating system.
3. Have you installed any new hardware on this computer, before the issue appeared?
4. Have you installed any new software or drivers on this computer, before the issue appeared?
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Click here to open a link where you can select the country and get the exact contact support number. I’m sure they will be a great help.
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Go to Solution.

Hi Asadkhan92,
Welcome to Lenovo Community!
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Click here to open a link where you can select the country and get the exact contact support number. I’m sure they will be a great help.
Hope this helps!
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Ashwin.S
Did someone help you today? Press the star on the left to thank them with a Kudo!
If you find a post helpful and it answers your question, please mark it as an "Accepted Solution"! This will help the rest of the Community with similar issues identify the verified solution and benefit from it.
Follow @LenovoForums on Twitter!

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Hi there
Welcome to the HP Support Forums! It is a great place to find the help you need, both from other users, HP experts and other support personnel. I understand that some keys are not working on your keyboard. I am happy to help with this. Are those keys working consistently in some applications? For now I would suggest you look at it as a cleaning issue. Perhaps some dust or debris is affecting the key presses.
Notebook Keyboard Troubleshooting (Windows 8)
Cleaning your Notebook PC
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Dear Customer,
Welcome and Thank you for posting your query on HP Support Forum
It looks like you are having issues with the Keyboard on your Notebook.
We will surely assist you with this.
Troubleshooting:
Step 01. Click on the Start Button and go to Control Panel
Step 02. Open the Device Manager and expand the Keyboard from the list
Step 03. Right click on Standard PS/2 Keyboard and click on Uninstall
Note: This driver will get installed again automatically on your Notebook
Step 04. Please turn OFF the Notebook
Step 05. Un-plug the Power/AC Adapter and also remove the Battery too
Step 06. Press and Hold the Power Button of the Notebook for a full minute
Step 07. Now let's re-insert the battery back in and plug back the Power/AC Adapter
Step 08. Start the Notebook and keep tapping F10 Key during the startup to access the BIOS
Step 09. Once you get to the BIOS, Please press F9 or F5 Key[Model specific] to load setup defaults for the BIOS
Step 10. Use the arrow keys to say "YES" and hit enter
Step 11. Now let's press Esc/Escape Key. Save Changes and Exit - Yes
Step 11. Now please wait till the Unit loads the Windows Operating system
If the issue still persists please check and verify if an External Keyboard works fine with your Notebook
Note: Please click on the below shown link to find more troubleshooting steps
http://h10025.www1.hp.com/ewfrf/wc/document?docname=c03738933&tmp_task=solveCategory&cc=us&dlc=en&lc...
Hope this helps, for any further queries reply to the post and feel free to join us again
**Click the KUDOS star on left to say Thanks**
Make it easier for other people to find solutions by marking a Reply 'Accept as Solution' if it solves your problem.
Thank You,
K N R K
Although I am an HP employee, I am speaking for myself and not for HP

No response on some keys.

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