HP ZBook x2

I/O devices
NOTE:
● Make sure external devices are supported and compliant (i.e., USB Type C, Thunderbolt 3, PCI Express, etc).
● If you have problems with external devices not provided by HP, contact device manufacturers for
compatibility and latest drivers prior to troubleshooting (i.e., USB devices, Thunderbolt devices, PCI Express
Card reader, VGA/Display/HDMI monitors, Speakers, etc).
● Be sure I/O devices are properly inserted into the I/O ports, and then be sure the I/O devices are recognized
by Windows Device Manager.
Keyboard
Items Procedures
Symptoms
Keystrokes not recognized
Characters not matched
Possible causes
Dust trapped under keycap, loose keycap, loose keyboard connection, defective
keyboard.
Troubleshooting steps
1. Inspect the keyboard for any signs of dust, liquid, or debris trapped under
sticky keys that might prevent keystroke recognition.
2. Check for incomplete connection between keyboard and system board by
verifying that caps lock or num lock light turns on when key is pressed.
3. Verify whether the keyboard is recognized in Windows Device Manager and
verify whether the keyboard driver is installed properly.
4. Test with a working external keyboard (i.e., USB keyboard).
Also test in Windows for special keys (Caps Lock, Shift, Ctrl, Fn, Windows, Alt) if
necessary.
5. Test with HP PC Hardware Diagnostics (UEFI) to isolate a hardware issue from
a software issue.
6. Verify that BIOS is up to date. If so, resetting BIOS to default may help.
7. Test with veried working operating system or restore operating system to be
sure that the issue is not caused by dierent language settings, sticky keys
feature, etc.
8. Verify that keyboard ex cables are fully inserted and in good condition.
The sections below are intended for authorized service providers/technicians.
1. Verify if keyboard ex cable is in good condition (no delamination or torn cable
end, no missing or cracked tracks, pads).
2. Verify keyboard ex cable ends are fully inserted and aligned with connectors
on system board, and those connector tabs are properly closed. Reseat
cables.
3. Replace new internal keyboard and retest.
Tips and tricks A key only works when pressed with force. Inspect and remove debris trapped
under keycap.
Common issues and possible solutions 103