The performance of a Windows 7 computer relies heavily on its processor's speed, but even a state-of-the-art PC can be bogged down for several reasons. One of the simplest ways to speed up a Windows 7 computer is by disabling unnecessary programs and applications that are no longer wanted, including pre-installed software and games from the manufacturer or PC dealer.
Disable utility programs, such as an antivirus scan, backup tools and disk cleaners that automatically run on start-up. The Windows 7 system often gets slower because of all the installed programs that accumulate over the course of business. Some software also adds its presence in the system tray to hasten the operation of the program, but this operation can actually hamper the system. Check MSconfig, and selectively disable the start-up items that might be slowing down the computer. Some applications are absolutely necessary to run the system, but the computer still runs smoothly without programs such as QuickTime or GoogleUpdate running in the background.
Check the computer's memory. Unlike older versions of Windows, Windows 7 requires at least 1 gigabyte of RAM for 32-bit computers and 2 gigabytes of RAM for 64-bit computers. Adding more memory to a personal computer boosts the performance of the operating system. Access Performance Information and Tools, and rerun the assessment located at the bottom right corner of the window to find out if the computer needs some hardware upgrades.