First click the 'Start' button and Type the 'UAC' in the search bar.Ģ. Each time it' pop-up and asks that want to run this program.But disabling UAC will lead to a less secure system.ġ. User Account Control means it needs the Administrator privileges when the local user runs the Application that needs Admin rights. Way #1: Disable User Account Control (UAC) To increase speed and performance of Windows 7, follow the below steps : By Optimizing the Windows 7 you can get the increased performance and speed in your system. Otherwise your system will very slow and It's annoying one for you. But to get all these features you have to upgrade your system also. Windows 7 comes with lots of new features and improved graphics. Windows 7 is the Microsoft's best operating system and also it is the fastest selling OS.