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| Symptom | Likely Cause | Fix | |---------|--------------|-----| | Keyboard works in BIOS but not Windows | Driver disabled or corrupted | Enable i8042prt service, reinstall driver | | Phantom key presses | Faulty controller or scan code mistranslation | Set OverrideKeyboardType to 7 (PC/AT) | | No response after sleep | Power management bug | Disable "Allow the computer to turn off this device" | | Error Code 10 or 39 in Device Manager | Resource conflict or outdated driver | Force reinstall via pnputil or remove hidden devices | | Only works in Safe Mode | Filter driver conflict (e.g., gaming software) | Uninstall 3rd-party keyboard filters |
The legacy PS/2 port remains a reliable connection for mechanical keyboard enthusiasts and enterprise environments. However, Windows 11 occasionally fails to recognize these devices, displaying a yellow exclamation mark next to the "Standard PS/2 Keyboard" in Device Manager, often accompanied by Code 10 or Code 19 errors. standard ps 2 keyboard driver windows 11
Reboot your PC and repeatedly press Del or F2 to enter the BIOS/UEFI. Navigate to the or Peripherals tab. | Symptom | Likely Cause | Fix |
While modern peripherals utilize USB and wireless Bluetooth technologies, many users still rely on, or require, legacy PS/2 keyboards, particularly on desktop PCs, industrial systems, or in legacy BIOS environments. Navigate to the or Peripherals tab