The Logitech K780 is a versatile multi-device keyboard known for its comfortable typing experience and seamless switching between devices. However, sometimes it can occasionally stop working. Common causes include outdated drivers, USB connectivity issues, software conflicts, or misconfigured settings.
Before performing troubleshooting steps, it is highly recommended to update your system drivers. Updating drivers ensures your keyboard functions correctly and reduces the risk of software conflicts. This guide provides detailed steps to update drivers with Driver Sentry, followed by multiple methods to fix a Logitech K780 keyboard that is not working.
Update Drivers First with Driver Sentry
Ensuring all device drivers are up to date is crucial for keyboard functionality. Driver Sentry automatically scans your Windows system, detects outdated or corrupted drivers, and installs the latest versions.
Steps to Update Drivers with Driver Sentry
Download and Install:
Click the "Download" button to download the software package.
Run the installer and follow the on-screen prompts. Choose your installation folder and complete the setup process.
Perform a Full System Scan:
Open the program from your desktop shortcut or the Windows Start menu, click the "Scan" button.
Driver Sentry will analyze all hardware drivers, including USB controllers, HID devices, and system chipset drivers.
Update All Drivers:
Identify any outdated, missing, or corrupted drivers, especially those related to USB input devices.
Click "Repair Now" button to download and install the recommended drivers automatically.
Restart Your Computer:
Reboot your PC to ensure all driver updates are applied properly.
With updated drivers, your system is ready for Logitech K780 troubleshooting.
How to Fix Logitech K780 Keyboard Issues
Once drivers are up to date, try the following methods to restore keyboard functionality.
Method 1: Check the Keyboard's Power and Connection
Ensure the keyboard is turned on using the power switch on the back.
Check the battery level if using AA batteries or ensure the built-in battery is charged.
If using a USB dongle, ensure it is fully inserted into a working USB port.
Test with a different USB port to rule out port-related issues.
Method 2: Re-Pair the Keyboard
Press the Easy-Switch button to select the device channel you want to connect.
Hold the Easy-Switch button for three seconds until the LED starts blinking.
On your computer, go to Bluetooth Settings and select "Add Bluetooth or other device".
Choose Logitech K780 from the list and complete the pairing process.
Method 3: Restart the Logitech Options Software
Open Task Manager by pressing Ctrl + Shift + Esc.
Locate "Logitech Options" under the Processes tab.
Right-click and select "Restart".
Check if the keyboard is now recognized.
Method 4: Check Windows Keyboard Settings
Press Windows + I to open Settings.
Navigate to "Ease of Access" > "Keyboard".
Ensure "Filter Keys" is turned off, as this can slow or block keyboard input.
Method 5: Test on Another Device
Connect the Logitech K780 to another computer or tablet.
If it works on another device, the issue may be specific to your PC's software or USB configuration.
Method 6: Reset the Keyboard
Turn off the keyboard.
Remove batteries or disconnect from USB for 30 seconds.
Reconnect or reinstall batteries, then turn on the keyboard.
Re-pair with your device.
Troubleshooting Tips
Always keep your system drivers updated using Driver Sentry.
Avoid connecting multiple USB hubs or devices that could interfere with keyboard recognition.
Make sure your Windows system is up to date.
Reinstall the Logitech Options software if issues persist.
Conclusion
A Logitech K780 keyboard that is not working can usually be fixed by updating drivers, checking connections, re-pairing, or adjusting system settings. By updating all drivers first using Driver Sentry and following the troubleshooting methods outlined above, you can quickly restore keyboard functionality and prevent future issues. Regular driver maintenance ensures smooth operation for all your input devices and enhances overall system stability.
