To update drivers in Windows Vista, click Start, go to Help and Support, and click Table of Contents. Click Hardware, Devices, and Drivers, and then click Driver Software. Click Repair or Update a Driver, and then click the To Update Driver Software Using Windows Update link.
On the new window, click Check for Updates on the left pane. A list of available drivers appears on the right pane. Click the View Available Updates link, locate the exact driver you need, click on it, click the Install button, and then click Close when the updating process is complete.
If the particular driver does not appear in the list, go to the manufacturer's website and download the latest driver. Open the Device Manager, locate the specific device you want to update drivers for, right-click on it, and then click Properties.
On the Properties window, click on the Driver tab, and click Update Driver. When a pop-up window asks how you would like to search for the driver software, click Browse My Computer for Driver Software. Go near the bottom of the window, and select the option that lets you pick a driver from the list of drivers on the computer. Click the Have Disk button, click Browse, and follow the on-screen instructions to select the specific driver. Click OK to install, and then click Next to begin installation.