PCTOOLS PERFORMANCE TOOLKIT 2011 IN 1 USER 3 PC MM Easy-to-use tools to speed up, maintain and optimize your PC PC Tools Performance Toolkit offers easy-to-use tools for speeding up your PC, optimizing performance, and protecting your privacy. It improves your Windows experience regardless of your level of expertise by using advanced technology to boost speed, improve stability, monitor your system, and tune up services. Additionally, it accelerates start times, recovers lost data, and repairs hard drives to keep your computer running like new. Operating System: Microsoft Windows 7 (32bit, 64bit), Windows Vista SP1+ (32bit, 64bit), Windows XP SP2+ (32bit)