Because your keyboard may currently be non-functional, you will need to utilize an external USB mouse, a laptop trackpad, or the Windows On-Screen Keyboard to complete these steps. You can open the On-Screen Keyboard by navigating to > Settings > Accessibility > Keyboard , or by searching for osk.exe using your mouse.
If your motherboard lacks a physical, circular PS/2 port, you are likely using a USB-to-PS/2 adapter or a laptop with an internal PS/2 connection.
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Right-click the right pane, select , and name it Scancode Map .
Navigate to: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Class\4d36e96b-e325-11ce-bfc1-08002be10318 . Because your keyboard may currently be non-functional, you
Double-click and change its Value Data to 1 (Hexadecimal).
If your PC/AT keyboard is still not working, it may be a physical failure of the PS/2 port, which is common with age. In such cases, switching to a modern USB keyboard is recommended for stability in 2026.
By morning, the terminal was off. The sysadmin was gone. The only thing left on the screen was a single line of text in the corner of the monitor: [Scroll Lock: ON] - WE ARE READY TO COMMUNICATE.
Say goodbye to compatibility headaches with your classic 101/102-key Enhanced PS/2 keyboard. Our newly released restores full functionality on modern Windows systems (including Windows 10/11) and resolves common issues such as: This public link is valid for 7 days
You usually do not need to download a separate driver file from a third party. The driver is included in Windows. If it is corrupted, you need to reinstall the native driver.
Be cautious of third-party "driver updater" sites; use official manufacturer or Microsoft sources whenever possible.
Before you download anything, identify your keyboard:
If the driver file registration is broken, forcing Device Manager to look at local backup files will restore the connection. Right-click the icon and select Device Manager . Scroll down and expand the Keyboards section. Can’t copy the link right now
Inside you should see:
This comprehensive guide explains how this driver works, why errors occur, and how to safely repair your keyboard functionality using official Windows resources. What is the PC/AT Enhanced PS/2 Keyboard Driver?
The most common file name associated with this hardware is . This file is the standard Microsoft driver package; however, ensure you are downloading a version dated after 2009, as these included stability patches for the PS/2 port handshake process.