Keyboard keys are not working

Im on mac OS X 10.6.8 several keyboard keys are not working. For instance the at symbol is not working or question mark and random other punctuation keys. The problem started after running some code from terminal to trun off mouse acceleration and then installing a plug-in to control more accurately the mouse funtions. Ive since uninstalled the plug in and disabled the adjustment in terminal. Ive checked all the normal keyboard funcions to make sure settings were not funky. When I log out and log in as a differnt user the problem with the keyboard is fixed. Someone please help
Code I ran
defaults write .GlobalPreferences com.apple.mouse.scaling -1
http://www.lockergnome.com/osx/2011/07/13/how-to-turn-off-mouse-acceleration-in- os-x/

Hello lindzthecreator,
I suggest this part of the article named One or more keys on the keyboard do not respond found here http://support.apple.com/kb/ts1381
Some keys don't work as expected
From the Apple menu, choose System Preferences.
From the View menu, choose Speech.
Click the Text to Speech tab.
If "Speak selected text when the key is pressed" is enabled, the key or key combination set to speak text cannot be used for other purposes or used to type text--click Set Key and change it to a less-commonly used key combination (try to use modifier keys such as Shift, Command, Option, and Control). Or, disable the "Speak selected text when the key is pressed" option.
Click the Universal Access pane in System Preferences, click the Keyboard tab.
Make sure that Slow Keys is turned off. With Slow Keys on, you need to press a key for a longer period of time for it to be recognized.
In the Universal Access pane, click the Mouse tab, and make sure Mouse Keys is turned off. With Mouse Keys enabled, you cannot use the Numeric Keypad to enter numbers--instead the keypad moves the pointer (cursor). (There is an option to enable Mouse Keys with five presses of the Option key; you may want to turn that option off to avoid accidentally enabling it.) If Mouse Keys is enabled and you are using a keyboard with no numeric keypad or Num Lock function, see Unable to type while Mouse Keys is enabled in Mac OS X.
If the function keys on the top row of the keyboard are not working as expected, see Mac OS X: How to change the behavior of function keys.
If the issue persists, use Keyboard Viewer to help isolate the issue:
Click the Language & Text pane (Mac OS X v10.6) or International pane (Mac OS X v10.5.8 or earlier) in System Preferences.
Click the Input Sources tab (or Input Menu tab in Mac OS X 10.5.8 or earlier).
Click the Keyboard & Character Viewer "On" checkbox to select it (click the Keyboard Viewer "On" checkbox in Mac OS X 10.5.8 or earlier).
From the Input (flag) menu, choose Show Keyboard Viewer.
If the keyboard is connected and detected by Mac OS X, the keys you type will highlight in the Keyboard Viewer window. Open TextEdit (or any text application), and try to type something using the keys that were previously not responding to see if they highlight in Keyboard Viewer.
Start from the Mac OS X Install Disc, choose Terminal from the Utilities menu and test the keys which were previously not working. If the keys work while started from the Install disc, then the keyboard itself is working correctly. Use Mac OS X: How to troubleshoot a software issue to isolate the software issue that may be causing the keys to not respond.
All the very best,
Sterling

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if you spilled a good bit of tea, its a serious problem, yes.
it got inside, and will corode, and bad things will begin to happen.
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The keyboard itself acts like a one way valve in the case of a substantial liquid spill. While liquid pours into the bottom chassis easy, it does not come out easily at all, and in the case of any spill, most of it will not come out by turning it upside down. Disconnect all power and contact Apple for diagnostics and repair.
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Few keyboard keys are not working

I am Using Mac 10.5.8
Yesterday, when i made my laptop shut down, all the keys were working perefectly.
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hi ,
follow this steps please ,
1. Right click on My Computer Icon > Properties > Device manager (on the left side)
2. find the Keyboard > Right click on it > CHeck for updates
3. Make sure that you installed the right Driver for Your Keyboard proided from HP official website
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try using another OS (replace your Win version)
** for experts only : you can use UBUNTU live disk to check the Keyboard without uninstalling you win version
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now it's one of two things
1. there is a problem with your BIOS
2. there is a HW problem
and in both cases i don't recommend you to start solving it yourself
Updating the BIOS is very sesitive operation and also the HW problems
so please look for the nearest HP support center to your city
and make sure that they will solve your Problem
Please click the "Thumbs Up" on the bottom right of this post to say thank you if you appreciate the support I provide!
Also be sure to mark my post as “Accept as Solution" if you feel my post solved your issue, it will help others who face the same challenge find the same solution.
Mark Th. Antonio
Faculty Of Engineering Alexandria University

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Hello mahi_20. Welcome to the HP Forums. I understand certain keyboard keys are not working. The issue could be hardware or software related. Before anything else, I would attempt cleaning the keyboard. For more information on how to clean a notebook keyboard, please reference this guide: How to Clean a Laptop Keyboard
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2. The computer's operating system. If you require assistance locating this information, please reference this website to determine your Windows operating system.
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Hi renanc93,
Welcome to Lenovo Community Forums!
I’m sorry to hear that the Keyboard keys are not working as expected in your B570 Laptop, below are the steps to check the issue in the computer:
Remove the battery and any other peripheral device connected to the computer. Hold the power button for 10 seconds and then connect only the AC Adapter and try to turn ON the computer.
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Also check if any external Keyboard is working as expected with the Laptop if it is working fine, the issue is Hardware related, I would Strongly Suggest Calling Technical Support for Assistance as the issue may be hardware related. 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!!!
Do post us back if the issue still persists.
Best Regards
Shiva Kumar
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Thanks for replying (thorvsphoenix)
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I've been looking all over the various threads and I can't find an answer that solves my problem.
Here are the details:
I bought the computer in the U.S. where I live.
I have a iMac 2.4GHz intel Core 2 Duo EMC 2133 with a 20" screen. Bought it new in February 2008.
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I tried the fn key but it appears to not work at all it has no effect on the functioning of the function keys.
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I've gone back and forth trying various combinations of checked and unchecked boxes to see if anything would work, so far I've come up with nothing.
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Yes I have turned off and taken the batteries out of the old keyboard. My bluetooth connection currently shows it as disconnected.
I have restarted the computer.
One thing I find odd; when I go under preferences and go to Keyboard and Mouse when I go under the section "Bluetooth" it shows Bluetooth mouse with the name of the mouse and the battery level. BUT nothing is showing up under bluetooth Keyboard, I can't figure out how to change this and don't know if it is contributing to the problem.
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Hendry
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Re: Function keys are not working correctly

I have a iMac running on an iMac and the F operation keys are not working properly.

My new iMac bluetooth keyboard is having issues all of the F operation keys are not working exept for F12 witch is supposed to be volume up takes me to mission control. I went into system prefrences and there was no setting in keyboard for the volume keys there are some settings for the operation keys but they are all checked and they are still not working and the settings that are checked arn't even what the keys are supposed to do. Please help.

SMC RESET
http://support.apple.com/kb/HT3964
Shut down the computer.
Unplug the computer's power cord and ALL peripherals.
Wait 15 seconds.
Attach the computers power cable.
Wait another 5 seconds and press the power button to turn on the computer.
The 5 second timing is important to a successful reset.
PRAM RESET
Zap the PRAM
Shut down the computer.
Locate the following keys on the keyboard: Command, Option, P, and R. You will need to hold these keys down simultaneously in step 4.
Turn on the computer.
Press and hold the Command-Option-P-R keys. You must press this key combination before the gray screen appears.
Hold the keys down until the computer restarts and you hear the startup sound for the second time.
Release the keys.

Some keys are not working of my laptop lz801pa#

Hi
Recently I installed Windows 8.1 on my laptop (hp pavilion dv6 6115tx entertainment notebook) - lz801pa
Then I installed Visual studio 2013. everything was working perfectly then.
I guess when I changed keyboard option in visual studio to C# 2005, after that some of the keys stopped working.
I also reset that option to default, but the issue is still there.
Down & right arrow keys, right arrow key of num pad, 1-5,8,9,0 keys in the first row(up above qwerty keys row) are not working.
I am able to press indivisually tab & alt, but alt+tab combination is not able to use for switching between windows/apps.
Please help me.

Hello Rdmusale,
I understand that some of the keys are not working on your notebook computer, and I would be happy to assist you in this matter!
To correct the output of characters from your keyboard, I recommend following this document on Notebook Keyboard Troubleshooting (Windows 8). This should help correct how the keys appear on your keyboard.
Please re-post with the results of your troubleshooting, and I look forward to your reply!
Regards
MechPilot
I work on behalf of HP
Please click “Accept as Solution ” if you feel my post solved your issue, it will help others find the solution.
Click the “Kudos, Thumbs Up" on the right to say “Thanks” for helping!

Some Keys are not working on Lenovo G570

Hello all
I am new here, looking for some help regarding my Lenovo G570.
Yesterday, it was working perfectly, I properly shut is down. I have set a BIOS pasword.
Today, when I switch it on, I was unable to type the pasword becasu some keys were not working. However, I managed to loged in with the help of On Screen Keyboard. After analysing it, I came to know that some keys on numpad includeing 0,2 and on the 2nd line(vertical numerical keys) 1,2,3,4,7,8,9,0 are not working. I tried to re-install the OS but I set a BIOS paswoed containing one of the missing keys.
Please let me know whether it is a software problem or should i take my laptop to some repairing shop?
Thanks
Solved!
Go to Solution.

Hi Asadkhan92,
Welcome to Lenovo Community!
As per the query we understood that you are facing an issue with the keyboard in your Lenovo G570 laptop.
As you have mentioned that the some keys are not working in your laptop, as you have also mentioned that the onscreen keyboard is working, please connect the external keyboard and check for the issue, this is to confirm if the issue with the hardware or software.
If the external keyboard works fine and if the keypad is not working then it’s a issue with the keypad of the laptop.
Please visit the nearest service centre for further details.
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!
Best regards,
Ashwin.S
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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.
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Some keys are not working

I have HP pavilion notebook PC with product number F6C53PA#ACJ serial number [Personal Information Removed] BIOS F.34-10/31/2013 keyboard revision 29.34.
Some keys in my keyboard are not working properly. I couldn't type < and > in microsoft office, on the websites etc.

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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Keyboard keys are not working

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