Windows Vista of January 2009, it had been announced that Vista usage had surpassed Microsoft's pre-launch two-year-out expectations of achieving 200 million users. At the release of Windows 7 (October 2009), Windows Vista (with approximately 400 million Internet users) was the second most widely used operating system on the Internet with an approximately 19% market share, the most widely used being Windows XP with an approximately 63% market share. In May 2010, Windows Vista's market share had an estimated range from 15% to 26%. On October 22, 2010, Microsoft ceased sales of retail copies of Windows Vista, and the OEM sales for
Windows startup process The sequence of booting Windows Vista is different from any previous version of Windows that uses the NT kernel. The operating system boot loader in Vista is called winload.exe, and is invoked by Windows Boot Manager. Additionally, the GINA that has been in use with all versions of Windows NT since 3.1 has been entirely replaced by "Credential Providers". Windows startup process The Windows startup process is the process by which Microsoft's Windows series of operating systems initializes. In Windows versions 1.01 to Windows/386, the system was loaded when codice_1 was executed. It then loaded codice_2 or codice_3 and codice_4