Go to the official website of your laptop manufacturer (Dell, HP, Lenovo, etc.) and download the "VGA" or "Display" driver for your specific model. Recommended Free Software for Advanced Control

Windows 7 does not require a free download to adjust brightness because the tools are built directly into the operating system. If your brightness controls are missing or not working, it is usually a driver issue rather than a missing app. 3 Fast Ways to Adjust Brightness in Windows 7 1. The Keyboard Shortcut (Fastest) Most laptops have dedicated physical keys for brightness.

Look for the on the F-keys (usually F4/F5 or F11/F12).

A tiny, portable app that puts a "tint" over your screen to go darker than Windows allows.