There are many factors that results in a phantom touch screen or a laptop touchscreen not working, and here are some of them: Some laptops or tablets are easily stuck in touch screen not working when operating in improper temperature, humidity, lights or other conditions that interfere with the screen features. Press and release the right arrow key repeatedly, while holding down "Fn," to decrease the screen brightness slowly, or hold the keys to darken the screen as low as the setting will go. The "Fn" and right arrow key will increase brightness. Press the "Fn" and left arrow keys together on some HP laptops to turn down the brightness.
How do you adjust the brightness on a HP laptop? While Windows 10 usually installs and maintains the proper drivers for your display adapter, it’s wise to double-check. Outdated display drivers are another reason that cause the brightness slider to stop working. To change the screen brightness using the keyboard: Press the Fn key on the. Why is the brightness slider not working? contrast on or off, and various options to accommodate low vision, and more.
If you are using any of the following Microsoft Windows version 7, 8, 8.1 or 10, this problem will occur which causes your PC. There are many reasons behind for brightness not working, one of them is graphics problems.
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