Lenovo Z500 Brightness can not adjust how to do

The reason why the brightness of Lenovo Z500 cannot be adjusted

Lenovo Z500 Notebook built-in dual graphics, one is the Intel processor built in the HD4000 core video card, the other is Nvida GeForce gt740m Independent graphics, leading to Lenovo Z500 notebook brightness is unable to adjust the main reason is the graphics driver exception.

Causes Lenovo Z500 screen brightness is unable to adjust mainly by the following 2 kinds of circumstances cause:

1) using one-key Ghos tool to reload the system;

2 To use the Driver wizard or Master Guru and other tools to update the graphics driver.

Because the use of a key ghost reload system or driver wizard updated video driver will cause the graphics version changes, and Lenovo Z500 notebook video card can only use the Lenovo-adjusted driver, it will appear graphics driver version inconsistent, and cause Lenovo Z500 notebook brightness can not be normal debugging.

Find Lenovo Z500 Notebook screen brightness can not adjust the reason, then solve the problem is relatively simple, we need to uninstall the installed dual graphics driver, and then download Lenovo's official website provided Z500 graphics driver can be resolved, the following is the specific method steps.

First, uninstall the NVIDIA graphics graphic tools

From the notebook Start menu, choose to Go to "control Panel", and then find "Uninstall program", the previously installed graphics related graphics tools to uninstall first, this type of Nvidia and HD graphics graphics drivers, but also mainly include: Nvidia Physx,nvidia, Intel HD Graphics Find these graphics related to all the optional uninstall can be, if there is no relevant graphics drivers, you do not need to operate;

Second, uninstall already installed HD4000 Core graphics and gt740m independent graphics driver

Go to the notebook Device Manager, then expand the "Display adapter" at the bottom, and then find the "HD Graphics 4000", "Nvida GeForce gt740m" graphics driver, and note that you need to uninstall the Nvida GeForce gt740m video driver first, Re-uninstall Core graphics HD Graphics 4000 driver

Third, after unloading gt740m independent video card and HD4000 core graphics driver, restart the computer, and then install the core graphics card and independent video drive from Lenovo official website to be installed in sequence.

A) about Lenovo Z500 Notebook graphics driver, you can go to the Internet Notebook Drive Center download, according to Lenovo Z500 model to find the corresponding driver

b) After the download drive, first install the core graphics driver, and then install the independent graphics driver, installation is very simple, directly open the drive to run the download, waiting for installation to complete

After the installation of dual graphics driver, restart the computer, Lenovo Z500 notebook will be able to adjust the brightness of the screen, you can use the keyboard F11 key to reduce screen brightness, F12 key to increase the brightness of the screen.