HP ZBook 17 Maintenance and Service Guide - Page 145
Touch screen, Items, Procedures, Quick check, Control Panel >, Tablet PC Settings, Component Tests
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Items Procedures Be sure that external display cables have good connection at both ends (system board and display panel). ● If moving cables affects the image, it is display cable. Test with a confirmed working cable. ● If moving cables does not affect the image, is display issue. Test with a confirmed working display Touch screen Items Symptoms Unresponsive Inaccurate Configure the touch display in Control Panel > Tablet PC Settings References Procedures Possible causes Dirt and smudge, driver, touch display configuration, power management. Troubleshooting steps Quick check Turn off the computer, spray glass cleaner onto a soft, damp cloth, and gently wipe the screen to remove dirt and smudge. NOTE: Do not spray cleaner directly onto the screen. 1. Restart the computer. 2. Verify touch screen and graphics drivers. 3. Configure the touch display to identify the screen as a touch screen as shown in the image at left. 4. Calibrate the screen and reset if touch functionality is still not working correctly. 5. Perform diagnostic test in HP Hardware Diagnostics under Component Tests > Touch Screen. If the diagnostics tests pass but the touch screen still does not respond, continue following the steps. 6. Adjust the power management settings for your touch screen. If the touch screen stops working after waking from sleep, adjust the power management settings so that the touch screen device stays active while the computer is in sleep mode. 7. Perform Microsoft System Restore and restore to a time when the system was working. 8. Perform HP System Recovery if none of the above actions resolves the issue. https://support.hp.com/us-en/document/c03488148 Common issues and possible solutions 131