Windows 95 was released on August 24, 1995, in the United States, and became a cultural phenomenon, supported by a significant advertising campaign featuring the Rolling Stones' song "Start Me Up." The operating system introduced the "Start" menu and was technically advanced for its time, despite some user interface challenges. Microsoft faced intense competition from IBM's OS/2 and the growing home PC market, which included the rise of gaming consoles. Windows 95 was made available for testing through a beta program, and its launch was backed by a 0 million advertising budget. The operating system included a "Plug & Play" feature, although it often led to crashes. Windows 95 relied on a DOS substructure and introduced DOS version 7.0, allowing better use of 32-bit processors. Microsoft also launched "The Microsoft Network" (MSN) alongside Windows 95, but Internet Explorer was only available in the additional "Plus!" package. By the end of 1995, Microsoft sold 40 million licenses for Windows 95, which continued to receive updates until 2001. The startup sound composed by Brian Eno was later added to the US Library of Congress in 2025.