Most laptops have at least one control key (CTRL), while standard PCs usually have two. These keys are used to optimize the other keyboard keys, giving them additional functions such as copying and pasting text. When one or both of these keys stop working, it can be quite annoying, especially when using certain computer shortcuts. This article explains how to fix the problem and how it can be used on computers running multiple operating systems, including Windows 10.
What is the cause of the “left CTRL key does not work” problem on Windows?
We looked at various user reports and analyzed various repair strategies commonly recommended by concerned users. It turns out that several different situations can lead to this problem. Here’s a shortlist of possible culprits that may be responsible for this problem:
Physical keyboard problem – Before focusing on other possible culprits, affected users should first make sure that they are not dealing with a defective keyboard. The easiest test to find out if this is true is to plug in another keyboard and see if the problem continues to occur.
The problem is caused by a faulty Windows update – There is a certain Windows update that adds extra keyboard shortcuts that are known to cause this problem with the left Ctrl key. In this case, you can solve the problem by installing all pending WIndows updates – this will allow you to install a patch for the problem.
Corrupt / Unsuitable HID driver – The HID driver is often responsible for this problem.
A corrupted instance can impair the functionality of some buttons. Affected users reported that they were able to resolve the problem by reinstalling the driver using Device Manager.
If you are looking for a solution to this problem, in this article you will find several repair strategies to help you solve the problem. Below you will find several different repair strategies that other users have successfully used in a similar situation to restore the normal functionality of the left Ctrl key.
For best results, we recommend that you follow the possible repairs listed below in the order, as we have categorized them by their effectiveness. Finally, you should come across a method that solves the problem, regardless of the cause.
Fix the problem with the left control key that doesn’t work in Windows 10.
Check to see if there is a physical problem.
This is a simple solution. Remove the original keyboard and plug in another keyboard to see if the problem occurs. If the control key still does not work, it means that the problem is not caused by a physical problem.
Configuring Control Panel Settings
Over 100 users have reported solving the problem after applying this solution, so give it a try.
Step 1: Type Control Panel in the Cortana search bar and open the Control Panel.
Step 2: Choose Accessibility > Accessibility Center > Make the keyboard easier to use.
Step 3: In the new window, you will see many options. Activate the options you want to use:
- Enable Mouse Keys: Use the arrow keys on the keyboard or the numeric pad to move the mouse pointer.
- Enable glue keys: allows you to use one key instead of three at a time (e.g. when logging in, by pressing Ctrl, Alt, and Del at the same time).
Upgrade to the latest version of Windows
This solution is also useful – several users were able to recover the control key after installing the next Windows update.
Step 1: Right-click the Windows icon on the taskbar, and then select Options,
Step 2: In the Preferences window, click Update and Security.
Step 3: Click Check for updates when you are in the Windows Update tab.
Step 4: Follow the instructions on the screen to install pending Windows updates.
After installing all pending updates, restart your computer and check for any remaining issues.
Installing the HID Driver
HID (Human Interface Devices) is a device class definition that replaces the PS/2-type connector with a generic USB driver to support HID devices, including keyboards, game controllers, etc. However, corrupted drivers can cause keyboard problems, such as the left control key not working in Windows 10.
How do I reinstall the HID drivers? Here’s a guide.
Step 1: Right-click the Windows icon on the taskbar and select Device Manager.
Step 2: With the Device Manager open, locate the keyboard and expand it.
Step 3: Right-click the HID Keyboard Device and select Uninstall device.
Step 4: Click the “Uninstall” button to confirm.
Step 5: Click the “Action” tab at the top and click the “Scan” button to get information about the hardware changes. Your system will detect the keyboard and reinstall the HID drivers on your computer.
Frequently Asked Questions
The easiest way to check if this is true is to plug in another keyboard and see if the problem persists. The problem is caused by a bug in a Windows update - There is a certain Windows update that aims to add more shortcut options that are known to cause this problem with the left Ctrl key.
- Press the ctrl+alt+fn keys simultaneously.
- Try uninstalling the keyboard driver, restarting your laptop, and then reinstalling it.
- Try attaching the keyboard connector to the inside of the laptop.
- (This is probably not the solution) try using an external keyboard.
- Press the Windows + X keys, select Control Panel.
- Change the view by selecting the "Large Icons" option in the upper right corner.
- Click on "Troubleshooting" and in the left pane, click on the "Show All" option.
- Perform hardware and device troubleshooting.
- Restart your computer and see if the problem is resolved.
Repair: In most cases, Ctrl + Alt + Del will reset the key if it is locked. (Then press Esc to exit the system screen.) Alternatively, you can also press the locked key: So if you clearly see that it is the Ctrl key that is locked, press and release both the left and right Ctrl keys.