how to fix keyboard works in bios but not in windows setup

The keyboard is available in the BIOS but the installation interface fails on the Windows, mainly due to driver compatibility, USB interface recognition or setup issues. 1. Try to replace it with a rear USB port or USB 2.0 port to avoid using HUB or wireless keyboard; 2. Enter the BIOS to enable the Legacy USB Support-related options; 3. Integrate the motherboard chipset driver into the installation USB disk or manually load the driver; 4. Use a virtual keyboard to temporarily replace the input. It is recommended to prioritize simple problems, such as interface replacement and BIOS settings, and then deal with complex situations such as drivers.

The problem of keyboard works in BIOS but not in Windows setup is actually quite common. Many users will encounter this situation when installing or reinstalling the system: the keyboard is clearly usable in the BIOS, but once you enter the Windows installation interface, it fails, resulting in the inability to continue operation.

There are several main reasons for this situation, such as incompatible drivers, insufficient power supply of USB interface, and wrong settings. The following methods can help you troubleshoot and solve this problem.

1. Check the keyboard connection method and interface

Some motherboards' USB ports may not be fully recognized by the Windows installer when booting, especially the front panel or interfaces connected via HUB.

• Try changing to a rear USB port (plugged directly on the motherboard), these ports usually have higher priority.
• If you are using a USB 3.0 interface , try changing to a USB 2.0 interface , because some old versions of Windows installation images do not support USB 3.0 well.
• Use a wired mechanical/film keyboard instead of a wireless or a keyboard with a docking station to avoid compatibility issues.

2. Enable Legacy USB Support in BIOS

Some motherboards have traditional USB support turned off by default, causing the Windows installer to not recognize the keyboard.

The method to enter the BIOS is generally to press Del , F2 , F10 or other keys when booting (see the motherboard brand prompts for details). Find options like the following:

• Legacy USB Support
• USB Keyboard/Mouse Legacy Support
• XHCI Hand-off or EHCI Hand-off

Set them to Enabled , save and restart your computer to try.

Note: The names of motherboard menus of different brands are slightly different. If you cannot find them, you can search for your motherboard model "enable legacy usb support" to locate it.

3. Load the keyboard driver to the Windows installation USB drive

If you are using a customized installation USB drive, it may lack the corresponding USB or keyboard driver, which will make the keyboard unusable.

You can try:

• Use tools such as DISM or NTLite to integrate the motherboard chipset driver (especially USB-related drivers) into the installation image.
• During the installation process, click the "Load Driver" button, insert the USB drive containing the driver, and load it manually.

This step is a little technical, but if you are familiar with the PE environment, you can do it.

4. Try using a virtual keyboard

If you have entered the Windows installation interface but are just stuck in the step of entering your username or locale settings, you can try:

• Click the Ease of Access icon (a small head) in the lower right corner of the screen
• Check On-Screen Keyboard
• Click the virtual keyboard with the mouse to complete the input

Although it is inefficient, it can at least keep you going.

Basically these common ways of handling it. Start with the simplest troubleshooting, such as changing the USB port or turning on the Legacy USB option in the BIOS, most of the situations can be solved. More complex ones, such as driver injection, are suitable for special hardware configurations or old motherboards.

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