No official patches are released by Microsoft for standard PS/2 keyboards. Instead:
Warning: Many third-party driver sites are filled with malware. Always verify file hashes and use only trusted sources.
Do not download “PC AT Enhanced PS/2 keyboard drivers” from generic driver sites.
Use the OS default unless you have a specific issue (e.g., stuck keys, wrong layout in legacy OS).
If you must patch, get the driver from MSFN, VOGONS, or a verified retro-computing GitHub repo — and always scan with VirusTotal. No official patches are released by Microsoft for
For modern systems, the correct “driver” is already in your OS. For retro builds, specify your OS version (e.g., Windows 98 SE) and exact keyboard model to find the proper community-vetted patch.
Solution: Enable Test Mode:
bcdedit /set testsigning on
Reboot. You’ll see a watermark – that’s normal. Install driver, then disable with bcdedit /set testsigning off.
Solution: Install SharpKeys or KeyTweak to remap those keys. Or use AutoHotkey script: Warning: Many third-party driver sites are filled with
SC15D::Send Volume_Up ; Map Power key to volume up
Modifying i8042prt.sys violates Windows driver signing. Use at your own risk. Always:
For most users, a USB-to-PS/2 adapter + a generic driver is safer. But for purists and retro builders, the patched driver is the only way to get those 102 keys working properly. Do not download “PC AT Enhanced PS/2 keyboard
Solution: The patched i8042prt.sys might be incompatible with your chipset. Use the registry-only patch instead, keeping Microsoft’s driver.
| Driver type | Source | Notes | |-------------|--------|-------| | Microsoft generic | Windows Update / OS media | No patching needed for basic 101/102. | | IBM PS/2 TrackPoint drivers | Lenovo support for older ThinkPads | Includes keyboard controller patch. | | Windows 98/ME PS/2 patch | MDGx.com (retro Windows patches) | Fixes scan code mapping. | | AT PS/2 Keyboard driver for NT 4.0 | HPC:PC (archived driver packs) | Requires SP6 + manual INF edit. | | Open-source PS/2 driver (Linux) | Kernel drivers (atkbd.ko) | Patches available via DKMS. |