How do I fix my keys? (R, 4 and 5.)

Based on the described symptoms and the steps already tried (restart, factory reset, driver reinstall, cleaning, Filter/Sticky Keys off), the most likely cause is a hardware failure of those specific keys.

Use these checks to confirm:

1. Test with another keyboard
   • Connect an external USB or Bluetooth keyboard.
   • Check whether R, 4, and 5 work normally on the external keyboard.
   • If the external keyboard works, the built‑in keyboard is likely faulty.
2. Test in other environments
   • Boot into Safe Mode and test the keys.
   • If available, test the keyboard in the device’s firmware/UEFI menu (arrow around and see if those keys respond where applicable).
   • If the keys fail everywhere, this confirms a hardware issue.
3. Check for debris or physical damage
   • Inspect the affected keys for cracks, damage, or anything stuck under them.
   • Use compressed air to blow under and around the keys.
   • If keys are intermittently working or physically loose, this also points to hardware failure.

If, after these checks, R, 4, and 5 still do not respond, the keyboard is almost certainly experiencing hardware failure and needs repair or replacement:

• For a laptop or Surface Type Cover: submit a service order or contact the device manufacturer’s support.
• For a desktop keyboard: replace the keyboard.

References:

• Troubleshoot Surface Pro Keyboard or Type Cover
• Mouse and keyboard problems in Windows
• Troubleshoot problems with your Surface mouse or keyboard
• Make your mouse, keyboard, and other input devices easier to use
• Keyboard doesn’t work right after unplug or undock and then reconnecting
• Keyboard keys malfunctioning - Microsoft Q&A
• keypad issue - Microsoft Q&A