When the external keyboard of the computer does not respond, you can try the following solutions: 1. Check the physical connection
Confirm Connection: Verify that the keyboard is properly connected to the USB or PS/2 port of the computer.
Re plug and unplug: If the connection is correct, try unplugging the keyboard from the interface and then reinserting it to ensure that the socket is secure.
Replace interface: If using a USB interface, try replacing it with another USB interface on the computer to eliminate the possibility of interface failure.
Check the cables: Check if the keyboard cables are damaged or broken, and if so, replace them with new cables. 2. Check keyboard status
Wireless keyboard: For wireless keyboards, check if the battery is fully charged, if the wireless receiver is properly connected to the computer, and try pairing again.
Keyboard switch: Ensure that the power switch of the keyboard is turned on (if the keyboard has a power switch).
Keyboard lights: Observe whether the indicator lights on the keyboard are on to determine if the keyboard is powered on. 3. Update or reinstall the driver program
Open Device Manager: In the Windows system, you can right-click on "This Computer" and select "Manage", then click on "Device Manager" in the "Computer Management" window.
Check keyboard devices: Find the "Keyboard" option in Device Manager and expand to see if there are any abnormal signs such as yellow exclamation marks or red crosses, which may indicate a problem with the driver program.
Update driver: If there are abnormal flags, you can try updating the driver. You can update it through the "Update Driver" option in the Device Manager, or download the latest driver from the keyboard manufacturer's official website for installation. 4. Check system settings
Keyboard settings: In the Windows system, you can check keyboard settings by selecting the "Keyboard" option in the "Control Panel" or "Settings" to ensure that the keyboard has not been disabled or the default settings have not been changed.
Power management: In some cases, power management settings may affect the normal operation of the keyboard. Check the power management settings to ensure that the keyboard is not set to turn off in low battery mode. 5. Other possible reasons and solutions
Poor interface contact: Due to prolonged use or improper insertion and removal, dust or oxides may accumulate inside the interface, affecting the contact performance. At this point, tools such as alcohol swabs can be used to clean the interface.
Internal keyboard malfunction: If the above methods are ineffective, it may be due to an internal keyboard malfunction. You can try connecting the keyboard to another computer for testing to determine if it is a problem with the keyboard itself. If it is a keyboard malfunction, a new keyboard needs to be replaced.
Computer USB interface failure: If multiple USB devices are unable to function properly on one USB interface of the computer, it may be due to a malfunction in that USB interface. You can try using other USB ports or replacing the computer for testing.
When the external keyboard of the computer does not respond, it can be checked and troubleshoot from multiple aspects such as physical connection, keyboard status, driver programs, system settings, etc. If the problem persists, it may be necessary to seek professional technical support or replace the keyboard with a new one.