Asked By
Cristine
10 points
N/A
Posted on - 08/05/2011
Keyboard garbage output when pressing keys
Hello experts, I have used my keyboard a night before this issue happened to my keyboard. When I log-in to my computer, which the operating system is Microsoft Windows 7, I have noticed that when pressing single key, there are 3 or more bullets appeared on the password input box. To make it short, I have a problem in my keyboard.
I have used the On-Screen keyboard to log-in into my Windows desktop and then tried to test my keyboard and found out that for every keys I’ve pressed, garbage where shown on the screen.
I am looking for the repair option, because I can’t afford to buy at this moment. For the meantime, I used the On-Screen keyboard.
Please do not post a comment if your solution is “buy” and “replace”.
Answered By
adlawan
0 points
N/A
#101656
Keyboard garbage output when pressing keys
There’s a possibility that you have a hardware problem. However, it’s likely that the keyboard driver just didn’t load properly.
The easiest way for you to find out is unplug the keyboard and replug it after 10 to 20 seconds. Since you are using Windows 7 it should automatically load the keyboard drivers. If you have the USB keyboard try using a different port.
To test it, open notepad and start typing as many characters as you can and see if everything is back to normal. If no, then restart the computer, make sure the keyboard is inserted properly and boot the computer back up.
You can also double check the keyboard settings. It might have been changed without you knowing. Go to Control Panel / (under Clock, Language, and Region) click Change Keyboards or other Input Methods / (on the Keyboard and Languages Tab) click the Change Keyboards button / and make sure it's set to English.
If it still does the same thing then I think you have a hardware issue.
Answered By
Trevor
0 points
N/A
#101657
Keyboard garbage output when pressing keys
Your problem comes possible with the keyboard decoder chip inside the circuit of your keyboard. Disassemble your keyboard, remove all screws at the back then look for the small printed circuit board just on the upper left of the keyboard when it is viewed at the back. Be careful in opening the keyboard, some keyboard keys might easily remove. Remove the plastic circuit that connects on the PCB which contains the keyboard decoder chips. Blow with warm air on the plastic circuit to dry the circuit board. Also wiping the dirt and dust will help to solve the problem, and then reconnect the plastic circuit board on the PCB that contains the keyboard decoder. Blow also a warm air on the IC.
Keyboard garbage output when pressing keys
If other characters appear after pressing a key on your keyboard, first, make sure you are using the correct language for your keyboard like English, for example. To check, click “Start”, “Control Panel”, “Date, Time, Language, and Regional Options” then “Regional and Language Options”. On the next screen, go to “Languages” tab and click “Details”.
In “Text Services and Input Languages” window, in “Settings” tab, under “Default input language”, select “English (United States) – US” from the dropdown list then click “Apply” then “OK”. After this, try your keyboard again then see if it works. If this doesn’t work, run the SFC utility. Press the Windows key + R to bring up the Run dialog then type without quotes “cmd” then hit Enter.
In the command prompt window, type without quotes “sfc /scannow” then hit Enter. When you are prompted for the Windows CD, insert your Windows setup CD or DVD on your optical drive then continue. When it is finished, close the command prompt then restart the computer. See if this works. If this doesn’t help either, try to uninstall the keyboard driver. Right-click “My Computer” then select “Properties”.
Go to “Hardware” tab then click “Device Manager”. On the next screen, expand “Keyboards” then right-click your keyboard and select “Uninstall”. Close the Device Manager then restart the computer. Windows will install the keyboard driver on startup. See if this works.
