Keyboard types two letters instead of one letter
Problem description:
When you press on a keyboard key, it types two letters instead of one letter. For example, when you pressed on the letter “A” it types “AS”.
It happens only with some keys. All remaining keys work properly. You reinstalled the operating system but it didn’t fix the problem.
Possible cause:
1. Bad connection between the keyboard cable and motherboard.
2. Failed keyboard.
3. Failed keyboard controller on the motherboard.
Possible troubleshooting steps and repair solution:
When your keyboard starts typing two letters instead of one most likely you have a failed keyboard. Before you replace the keyboard with a new one, try reconnecting the keyboard cable. It’s possible that contacts inside the connector got oxidized and the cable doesn’t make good connecting with the motherboard.
If reconnecting the cable doesn’t help, replace the keyboard with a new one.
If you still experiencing the same problem even after replacing the keyboard, most likely you have a problem with the keyboard controller on the motherboard. If that’s the case, you’ll have to replace the whole motherboard.
Tags: Keyboard key, Keyboard problem
Reader's Comments
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my laptop Toshiba satellite L45,S7423,letter E in the keyboard is failed to work and it one of lock in key letters it could not lock me in, so I try to connect external keyboard work normal. the same key can some time work for 2 minutes or less than minutes and stop again.
what could be the problem and can I go about this problem on laptop?
I am for help .
Regards
Chris
Chris,
If only one key is failing, most likely this is the keyboard problem. The keyboard cannot be disassembled and repaired. You’ll have to replace the keyboard.
Here are keyboard part numbers for a Satellite L45-S7423 laptop:
US English keyboard: H000001790 or H000000990 or H000006820 (either one will work).
Google the part number and find a new keyboard.
You can replace the keyboard using this instructions: http://www.irisvista.com/tech/laptops/Toshiba-Satellite-L45/laptop-disassembly-instructions-1.htm
1. Remove two screws securing the keyboard on the bottom. This screws are shown in the step 3. One of the on the left side from the wireless card and another one on the right side from the memory module.
2. Remove keyboard as it shown on the steps 12 and 13.
i had the exact same problem in my hp laptop…
a=as
s=as
q=qw
w=qw
that was weird, but after 10 mins of searching for a solution and doing nothing… it was back to normal!
now im writing on it… and it works fine…
so before u go buy another keyboard… just w8 for it
ali fah,
I don’t think that your problem is gone forever. Most likely it will reappear after some time.
If the problem comes back, try reconnecting the keyboard cable first. It’s possible the connection between the keyboard and motherboard is bad and reconnecting the cable will fix it.
Im having the same problem with a Compaq CQ61, only a couple of keys when pressed type 2 instead of 1.
I have plugged in a USB keyboard and that has worked fine, I have reconnected the laptop cable and cleaned the connection.
Ive also run Malwarebytes and and installed all latest updates and drivers, and updated BIOS. So before I buy a new keyboard is their anything else I can try?