The brightness level of my HP laptop automatically comes to zero no matter how many times I adjust it. Even the scroll bar does not work many times. Why is it so? -
![windows 7 - How to adjust the brightness of an LCD monitor using Compaq CQ62-win7 64bit - Super User windows 7 - How to adjust the brightness of an LCD monitor using Compaq CQ62-win7 64bit - Super User](https://i.stack.imgur.com/fJbQ5.png)
windows 7 - How to adjust the brightness of an LCD monitor using Compaq CQ62-win7 64bit - Super User
![How To Adjust Brightness For Window 7 || Change Brightness On PC || Control the Desktop Brightness - YouTube How To Adjust Brightness For Window 7 || Change Brightness On PC || Control the Desktop Brightness - YouTube](https://i.ytimg.com/vi/MS_tXqt6lR4/sddefault.jpg)
How To Adjust Brightness For Window 7 || Change Brightness On PC || Control the Desktop Brightness - YouTube
![How To Adjust Brightness For Window 7 || Change Brightness On PC || Control the Desktop Brightness - YouTube How To Adjust Brightness For Window 7 || Change Brightness On PC || Control the Desktop Brightness - YouTube](https://i.ytimg.com/vi/a4wKACqrrTE/hq720.jpg?sqp=-oaymwEhCK4FEIIDSFryq4qpAxMIARUAAAAAGAElAADIQj0AgKJD&rs=AOn4CLClOClXZ3Xeh5g4kESi6WtyMBMPOw)