If it does not work, please uninstall the graphics driver software from device manager by following these steps: Please do not click on any link, image, ad or download as it is a YouTube link used only for viewing. There is a YouTube link included: Please check that out and follow the instructions mentioned in it: That will hopefully bring back the adjustment bar! Once removed, click the “Scan for hardware changes” icon Be sure to also check the “Remove driver” option. In the Device Manager window, look for “Monitors”, then right-click your monitor and select “Uninstall”.Start -> Control Panel -> Hardware and Sound -> Device Manager.If this does not do the trick for you please try these steps: Then restart the computer and check if the brightness slider bar has been restored. Please select the option “Restore your computer when Windows starts normally” Have you reinstalled the graphics drivers?įor starters please try a system restore to an earlier time before the issue started from this link:.Did this happen after a software or windows update?.I take it as a privilege to share this platform with you.įor better clarity and to assist you better I would require more information regarding this. We greatly appreciate you for doing business with HP. You are a valued HP customer and it is paramount to assist you here. It is always a privilege to work with technical specialists like you. I will be delighted to assist you with this.įabulous diagnosis and superb analysis of the issue before posting. Next click on Change advanced power settings, and under Advanced settings expand the Display and Enable adaptive brightness.Hi Day! Thanks for taking an interest in the HP Support Forums! I read your post about the missing brightness bar. Open the Control panel and click on the Power Options.Īnd From your current active power plan click on the Change Plan Settings. Enable Adaptive Brightness using Power Options: If the light sensor category is present then update the driver manually. Then open the Device Manager and expand the Sensors category and look for the light sensor. So download the latest drivers for your device and install it manually. Sometimes after installing new Windows operating system, you need to install all the Drivers. If the light sensor category is present then make sure it is not disabled, if it is disabled then enable the sensor. ![]() This command will open the Device Manager.Īnd expand the Sensors category and look for the light sensor. Open Run command by pressing Windows + R and type devmgmt.msc and hit enter. Check the Light sensor is available on your device: And it plays a vital role in saving the battery power of the laptop. Light sensors control the brightness of the computer’s screen automatically. The light sensor is a small hardware device that is mostly used in smartphones and computers to make their screen adaptive to the light surrounding them. If you are not able to find the Adaptive brightness option in the Windows setting, then your device might not have a built-in ambient light sensor.
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