when was windows 7 service pack 1 released
Windows 7 Windows 7 Service Pack 1 (SP1) was announced on March 18, 2010. A beta was released on July 12, 2010.[116][117][118] The final version was released to the public on February 22, 2011.[119] At the time of release, it was not made mandatory. It was available via Windows Update, direct download, or by ordering the Windows 7 SP1 DVD.[120] The service pack is on a much smaller scale than those released for previous versions of Windows, particularly Windows Vista.[121]
Windows Virtual PC Windows Virtual PC (successor to Microsoft Virtual PC 2007, Microsoft Virtual PC 2004, and Connectix Virtual PC) is a virtualization program for Microsoft Windows. In July 2006 Microsoft released the Windows version as a free product.[3] In August 2006, Microsoft announced the Macintosh version would not be ported to Intel-based Macintosh computers, effectively discontinuing the product as PowerPC-based Macintosh computers are no longer manufactured. The newest release, Windows Virtual PC, does not run on versions of Windows earlier than Windows 7, and does not officially support MS-DOS or operating systems earlier than Windows XP Professional SP3 as guests.[2] The older versions, which support a wider range of host and guest operating systems, remain available. Starting with Windows 8, Hyper-V supersedes Windows Virtual PC.