Why would you download and install software and drivers when windows already installs them for you?

Downloading and installing software and drivers manually can provide access to the latest versions, which may include important updates, bug fixes, and new features not available in the pre-installed versions. Additionally, certain hardware may require specific drivers for optimal performance or compatibility that Windows' generic drivers do not provide. Custom installations can also allow for tailored settings and optimizations based on individual needs. Lastly, troubleshooting issues may necessitate reinstalling or updating drivers directly from the manufacturer's website.