Gateway.com should have the best drivers for a Gateway notebook.
Don't use the Update Driver button and don't let Windows search for what it thinks is the best driver. Follow the procedure that Gateway gives for each individual driver.
At Gateway.com, when you click on the driver, you will see the following links:
Download Now > How to Download > How to Install
Click "How to install" and follow that procedure.
Gateway MX6441 Notebook Specifications
Part Number: 1009033Gateway MX6441 Notebook
Processor AMD Turion? 64 Mobile Technology ML-34
Operates at 1.8 GHz | 1 MB L2 Cache
HyperTransport? technology at up to 1600 MHz
Screen 15.4-inch Widescreen Ultrabright WXGA TFT
Chipset ATI Radeon