If your PS/2 keyboard has stopped working or shows a yellow exclamation mark in Device Manager, the culprit is usually one of the following:
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
Choose and click Next .
| Symptom | Typical Cause | Solution | |---------|--------------|----------| | Keyboard not recognized | PS/2 port disabled in BIOS | Enable "Legacy USB / PS/2 Support" | | Ghost typing / repeated keys | IRQ conflict or faulty driver stack | Remove driver via Device Manager → Scan for hardware changes | | Driver not loading (Code 10 / 39) | Corrupted driver or registry UpperFilters | Run sfc /scannow or delete UpperFilters key under HKLM\SYSTEM\CurrentControlSet\Services\i8042prt\Parameters | | Blue screen (PS2MOUSE_INIT_ERROR) | Usually from virtual machine misconfiguration | Disable PS/2 mouse in VM settings if only keyboard is used | If your PS/2 keyboard has stopped working or
The exact shown in Device Manager (e.g., Code 10, Code 19, Code 43). Your motherboard model or PC brand. Whether you are using a direct PS/2 port or a USB adapter . | Symptom | Typical Cause | Solution |
This is the most effective solution for "Code 10" or "Code 19" errors in Device Manager. Right-click the and select Device Manager . Expand the Keyboards section.