How to install a sound card?

While Microsoft recommends that the visually impaired purchase a full-function screen reader for general computer use, Narrator is a significant piece of software for a number of reasons. Narrator is included with every copy of Microsoft Windows, providing a measure of access to Windows without the need to install additional software as long as the computer in use includes a sound card and speakers or headphones. Windows 2000 was the Microsoft operating system released with some degree of accessibility for the blind built in, permitting a blind person to walk up to any such computer and make some use of it immediately.