HP ProBook 440 G11 keyboard or trackpad is not working correctly

The checks in more detail

For the keyboard, check Fn lock, which makes the top-row keys act as function keys or as media keys; press the Fn lock key, or Fn and Esc on many HP laptops, and watch the indicator. If keys type wrong characters, check the language and layout in Settings, Time and language, because a second keyboard layout switched in by Windows and Shift can change what the keys produce. Check Num Lock if the keys on the right type numbers.

Clean under the keys with compressed air if a key sticks, and restart the laptop to rule out a stuck state. If only some keys fail, a liquid spill or a failing connection may be the cause, and a technician can replace the keyboard. For the trackpad, look for a toggle: many HP laptops let you disable the trackpad with a double tap on a corner of the touchpad or a dedicated key, shown by a small light. Double-tap the corner to turn it back on.

In Settings, Bluetooth and devices, Touchpad, check that the touchpad is on, and that Leave touchpad on when a mouse is connected is chosen if you use a mouse. Adjust the sensitivity if the pointer jumps. Clean the surface with a dry cloth, since grease and moisture confuse it. Update the drivers through HP Support Assistant, which installs the right keyboard and touchpad drivers, and update the BIOS, then restart. If problems persist across restarts and settings, hold the power key with the charger out for 15 seconds, and if they remain, HP can repair the hardware with the product number.