How to fix a broken keyboard

You try to type an email, but nothing happens. Or perhaps you can type, but either specific letters don’t appear or you end up with 15 of the same letter on the screen. If you’re suffering these or similar issues, you may feel like all is lost and your keyboard is toast.

“Broken” is a broad term. Many issues can “break” a keyboard, both on the hardware and software side. We can’t solve your keyboard woes if you used it like a baseball bat, but we can walk you through options to help resolve typical issues that affect and even prevent input.

Keyboard types

Before digging in, determine the keyboard you have. Many laptop keyboards ship with Chiclet keys that press against a rubber dome to complete an electrical contact. You’ll also find versions that rely on an X-based scissor design that still uses the rubber dome but shortens the key travel distance and provides a snappier feel. Modern laptop keyboards typically rely on the latter scissor-switch design.

Previous MacBook keyboards used Apple’s butterfly design that resembled a V rather than an X. Apple used this design to create thinner MacBooks, but in the process, introduced a keyboard that was more prone to collecting dust and debris than scissor-based models. Unable to resolve the issues, Apple reverted to scissor-based keys starting with the 16-inch MacBook Pro in 2019.

Finally, there are mechanical switches. Keyboards based on these typically have taller, easily removable keycaps. There are no rubber domes. Instead, an enclosed spring and stem actuates your key press when it touches a contact. Mechanical keyboards are typically loud.

Different switch types can require different fix-it methods, and they’re usually all resilient to different cleaning and clearing attempts. But something that affects all keyboards is software.

Software fixes

Reboot your PC

This should be your first step in resolving keyboard issues. Sometimes conflicts arise on the software side that cause the keyboard driver to become unresponsive, like a conflict with another driver or application. Rebooting can help resolve that conflict or error.

For MacOS, you may need to reset the System Management Controller to resolve the issue. That means shutting down, removing the power cord, and waiting 15 seconds before restarting. For MacBooks, hold the CTRL + Option + Shift keys simultaneously, followed by the Power button for 10 seconds. Next, release all keys and press the Power button.

Update or reinstall drivers

If rebooting doesn’t work, try updating or reinstalling the driver. Typically, when you connect a keyboard, the operating system installs a compatible driver. On laptops, this driver is already installed unless you connect an external keyboard (gaming keyboards may have their own software that you download from the official website).

This driver may be corrupt, causing communication issues between your PC and the peripheral.

Here, you want to update the driver to replace the possibly-corrupted version or remove it entirely and reinstall a fresh version.

For Windows:

Step 1: Right-click on the Start button and select Device Manager on the Power User menu.

Step 2: Expand the Keyboards entry and right-click on your device.

Step 3: Select Update Driver on the pop-up menu and follow the instructions. This merely updates the driver supplied in Windows.

If this method doesn’t fix your issue, follow these steps:

Step 1: Right-click on the Start button and select Device Manager on the Power User menu.

Step 2: Expand the Keyboards entry and right-click on your device.

Step 3: Select Uninstall Device on the pop-up menu.

Step 4: Click Action located on the Device Manager toolbar and select Scan for Hardware Changes on the drop-down menu. This should reinstall your keyboard’s driver.

Note: If you’re using a keyboard with drivers that need to be independently downloaded from the manufacturer, visit their website for the latest version and run the executable to reinstall it.

Check your region or language settings

Did your region and/or language settings change? Follow these instructions to find out.

For Windows:

Step 1: Click the Start button, followed by the Gear icon located on the Start menu.

Step 2: Select Time & Language.

Step 3: Select Region listed on the left and verify that Windows is set to your correct region.

Step 4: Select Language listed on the left and verify that Windows is set to your correct language. Click the Plus Sign (+) under Preferred Languages if you prefer a different language. After installing, click Options to select the keyboard type.

For MacOS:

Step 1: Click the System Preferences gear icon located on the Dock.

Step 2: Select Language & Region (flag icon).

Step 3: Verify your region or click the blue up/down arrows to change.

Step 4: Verify your preferred language. If it’s incorrect, click the Plus Sign (+) button to add another language.

Check your input settings

Maybe your keyboard is acting weird due to incorrect repeat and delay settings. Here’s how you can adjust those settings:

For Windows:

Step 1: Type “control panel” in the search field and select the resulting app.

Step 2: Click Hardware and Sound, followed by Devices and Printers.

Step 3: Right-click on your keyboard and select Keyboard Settings on the pop-up menu.

Step 4: Another pop-up window will appear with the Speed tab loaded by default. Adjust the Repeat Delay setting to see if that resolves your issue.

If Step 4 doesn’t work, do the following:

Step 1: Type “control panel” in the search field and select the resulting app.

Step 2: Click Ease of Access, followed by Ease of Access Center.

Step 3: Scroll down and select Make the Keyboard Easier to Use.

Step 4: Uncheck Turn on Sticky Keys and/or Turn on Filter Keys if they’re currently checked.

Step 5: Click ApplyOK to save these settings.

For MacOS:

Step 1: Click the Apple logo in the top-left corner, followed by System Preferences in the drop-down menu. Alternatively, you can click the Gear icon located on the Dock.

Step 2: Click Keyboard.

Step 3: Adjust the delay and repeat settings to see if that resolves your issue.

Uninstall apps and programs

An app or program running in the background may cause your keyboard issues. If it installed drivers, they might interfere with your keyboard, too. Determine when your keyboard began acting strangely and remove any software that you installed prior to the misbehavior. For instance, if you installed desktop software that manages a new keyboard, but you’re still running software for an older keyboard, the two may conflict.

Hardware fixes

Check the connection

For external keyboards, the problem may be a physical connection. Does the cable have a short, causing erratic behavior in Windows and MacOS? Is there gunk collected in the USB connector? Is the connector damaged? Is your PC’s USB port damaged? These factors will cause issues.

One method you can try is to disconnect and reconnect the keyboard to the same port. If this doesn’t fix the issue, connect the keyboard to a different port. The current USB port may suffer software or hardware issues that require a separate investigation and fix.

Another way to test the keyboard is to plug it into another PC. If it’s misbehaving on that device, then the issue is on the keyboard side. If not, then it’s the original parent PC.

Check for active features

Cooler Master

There are keyboards you can buy that include special features you toggle on with a key press. For instance, Cooler Master’s MK850 includes Aimpad technology that adds gamepad-like analog controls to the WASD keys. If this feature is accidentally toggled on, every word you type includes additional letters, like Q, E, and Z. Your problems could stem from similar features.

Similarly, some keyboards let you temporarily turn off useful keys, like the Windows key. Make sure those aren’t toggled to off if they’re giving you trouble.

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