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❤Windows 7 service Pack 1
Windows 7 is the Microsoft Windows operating system (OS) released commercially in October 2009 as the successor to Windows Vista. 
Windows 7 is built on the Windows Vista kernel and was intended to be an update to the Vista OS. It uses the same Aero user interface (UI) that debuted in Windows Vista. As a result, to many end users, the biggest changes between Vista and Windows 7 were faster boot times, new UIs and the addition of Internet Explorer (IE) 8. The OS is widely available in three retail editions: Windows 7 Home Premium, Professional and Ultimate. Starter, Home Basic and Enterprise editions are available in some markets. 

❤Windows Xp service Pack 3
Windows Service Pack 3 (sp3) is the official package from Microsoft that comes with the purpose of bettering the security and stability of your Windows XP program.
The program is not just a simple patch that adds Windows updates to your system, it is a complete packet of major improvements and tools like the firewall is better, powerful antipodes and security system for Outlook and Explorer (control discharge of internet privacy).
It adds special filters to avoid virus worms, Trojans horses and hacker attacks. This update is especially handy for professionals and computer programmers.