Windows XP is reaching end of support on April 8, 2014, after which it will no longer receive security updates or technical support. While 600 million systems still use XP, accounting for 37% of the OS market, upgrading is important for businesses. After support ends, XP users will be vulnerable to security issues and lack assistance from Microsoft. Upgrading to a newer OS like Windows 7 provides benefits such as improved security, reduced service interruptions, and access to updated software and systems. Computer repair professionals can help businesses develop an upgrade plan to transition before support expires.