1. For the most common PS2 interface keyboard on desktop computers, if it cannot be recognized, the main problem is It may be caused by a faulty keyboard or a bad PS2 interface on the computer motherboard. Usually the PS2 interface on the motherboard is rarely damaged. Most of the time it is caused by problems with the keyboard, such as the keyboard cable being twisted internally, water in the keyboard, or broken.
2. The notebook USB external keyboard cannot be recognized. The solution is as follows: right-click on the desktop and select HID-compliant device---update driver. Browse Computer for driver software. Select the USB input device from your computer's list of device drivers. Then click Next.
3. The front USB cable is connected incorrectly. This type of fault will occur when the USB cable on the motherboard is connected to the front USB port on the chassis and the positive and negative connections are reversed. This is also very dangerous, because the reverse connection may cause the USB device to burn. Therefore, try to use the USB interface on the rear of the chassis and use less extension cords.
4. The notebook USB external keyboard cannot be recognized. It is usually caused by a USB driver failure. You can try to use 360 Driver Master to repair the computer’s USB driver. Open your computer browser and search "360 Driver Master" on Baidu. Download the installation package of 360 Driver Master. Open the installation package and install 360 Driver Master.
5. The motherboard does not enable support for USB keyboards. The USBO driver or motherboard and keyboard drivers are not installed. Use Driver Life to upgrade related drivers. Change the oral cavity. Add a USB extension cable or HUB (1, 0), if that doesn't work, try a few more.
1. You can try to change the USB interface of the laptop to see if it can be used normally. Check whether there is a problem with the USB interface of the laptop. Try using other USB devices, such as U disk, mouse, etc., to see if the external keyboard is faulty.
2. If the laptop does not respond to the external keyboard, you can try another USB interface or try another computer to see if it is a keyboard problem. If it works fine on other computers, you need to check whether the laptop driver is working properly or whether the device class is disabled.
3. There may be a problem with the computer's keyboard driver. There may be a problem with the computer system, you can restart the computer. The keyboard is a command and data input device used to operate equipment. It also refers to a set of function keys that operate a machine or equipment through system arrangements.
4. First, find the "Computer" icon on your computer, and then right-click it. Click "Properties" in the pop-up menu. In the computer's properties window, click "Device Manager" on the left. After entering the Device Manager, find the connected external keyboard under "Keyboard" and right-click it.
5. Use the mouse to right-click the input method in the lower right corner of the desktop, and then select the settings option in the pop-up menu. In the pop-up interface, we select the unnecessary input method, then click Delete, and then click OK to exit.
System or BIOS problem. USB devices are not recognized in the system when you have disabled USB in the BIOS or operating system. The solution is to enable options related to USB devices. Just turn on the computer and press the F2 or DEL key to enter the BIOS and select enable usb device.
The second is that the USB device cannot be recognized by the computer. We first need to determine whether it is a problem with the computer or the USB device. We can use other USB devices to test whether there are any problems with the computer. If it is a computer problem. Is your computer damaged by a virus?
USB cannot be recognized often, it is not just a setting problem. If there is a problem with the driver, it will also cause this situation. The solution is as follows: First, right-click My Computer and click Manage. Select and click Single Open on the left.
You can try to change the USB interface of the laptop to see if it can be used normally, and check whether there is a problem with the USB interface of the laptop. Try using other USB devices, such as U disk, mouse, etc., to see if the external keyboard is faulty.
Click "My Computer", select "Properties", open the "System Properties" dialog box, and switch to the "Hardware" tab.
You can try changing the USB interface of the laptop to see if it can be used normally, and check whether there is a problem with the USB interface of the laptop. Try using other USB devices, such as U disk, mouse, etc., to see if the external keyboard is faulty.
The computer's external keyboard does not respond. Possible reasons are as follows: power supply problem, maybe the USB interface does not transmit data, try using another USB interface; driver problem, just reinstall the driver or update the driver. There are two ways to install the driver:
Reference as follows: First, find the "Computer" icon on your computer, and then right-click. Click "Properties" in the pop-up menu. In the computer's properties window, click "Device Manager" on the left. After entering the Device Manager, find the connected external keyboard under "Keyboard" and right-click it.
What to do if the keyboard does not respond when plugged into the laptop: If the external keyboard of the laptop itself is damaged, you can connect it through another computer to see if the external keyboard is damaged, causing the keyboard to not respond when plugged into the laptop.
Click "My Computer", select "Properties", open the "System Properties" dialog box, and switch to the "Hardware" tab.
The steps to solve the problem of unresponsiveness of the external USB keyboard on the notebook are as follows: (Demo using WIN10 system) 1. Start-search for "Device Manager" and click the Open button on the right. 2. Wait a moment and the system will open the "Device Manager". 3. Expand the keyboard, right-click "Update Driver" and proceed to the next step.
1. The computer is not compatible. Solution: Buy a new one that fits. I bought the wrong keyboard, it's not the right brand. Solution: same. It is not installed properly and the interface is not connected securely. The solution is to reinstall it. The device manager does not open the keyboard.
2. You can try to change the USB interface of the notebook to see if it can be used normally. Check whether there is a problem with the USB interface of the notebook. Try using other USB devices, such as U disk, mouse, etc., to see if the external keyboard is faulty.
3. If the laptop does not respond to the external keyboard, you can try another USB interface or try another computer to see if it is a keyboard problem. If it works normally on other computers, you need to check whether the laptop driver is working properly or whether the device class is disabled.
The laptop’s external keyboard and mouse are unresponsive. Generally, the USB driver is not installed correctly. You can use 360 Driver Master. , driver wizard and other tools to install the USB driver. The steps are as follows: Use Baidu to search for "360 Driver Master" and click on the first website with official certification.
It may be that the USB power-saving mode is turned on by default, causing insufficient power supply to some USB interfaces and causing intermittent failure of USB devices. As long as the USB power saving mode is turned off, the USB device can return to normal. Specific steps: Click "My Computer", select "Properties", open the "System Properties" dialog box, and switch to the "Hardware" tab.
There are many possible reasons why the laptop's external keyboard is broken and the computer keyboard socket is broken. It may be that the interface is burned out, or there may be a problem with the interface driver. As a result, there is no response when plugging in the keyboard. Solution: Try changing to another keyboard first. If it doesn't work, it means there is a problem with the computer interface.
- Follow the on-screen prompts and try to solve the problem. If the keyboard still fails after using the troubleshooter, please continue to the next step.
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