Hewlett Packard (HP) laptops use liquid crystal display (LCD) technology. LCD technology is a lot more reliable than the old, cathode ray tubes that were used for displays for desktop computers. HP laptop display issues can include the display being dim during start-up and problems using the displays for graphic-intensive games.
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Restart the HP laptop with AC power if the display is dim when starting on batteries. Connect the power adaptor to an electrical socket; power-off the laptop and then power it back on.
Change the LCD brightness if the display is still not at the correct brightness level. Hold the function key, which is marked "Fn" while pressing "F7" to increase brightness and "F8" to decrease it. If that doesn't work, look for the brightness button on the keyboard (it's a circle icon with dots surrounding it).
Disconnect the HP laptop from any docking station and use the built-in display if the screen freezes when playing intensive graphics-oriented games. Most HP laptops don't support intense graphics on external monitors. Hot unplugging of an external monitor can cause the built-in screen to go black.
Un-click Windows ClearType if text on the HP laptop's display appears fuzzy. Right-click in the Windows Desktop and choose Properties, click on the Appearance tab, click the effects button and uncheck the "Use the following method to smooth edges of screen fonts" button.
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