Step1
Uninstall any programs that you do not use, both self-installed and manufacturer-installed. Most new computers are loaded with pre-installed programs ("bloatware") that you may not want or ever need. These usually include limited edition or trial versions of software from various manufacturers. All these additional programs take up precious disc space, memory and processing resources, and should be uninstalled. See resources below for how to use Vista's "Programs and Features" to uninstall programs.
Step2
Limit how many programs load and run automatically at Startup. Many programs are designed to automatically load when you boot up your computer. Typically, they will run in the background, so they will immediately open when you click on the program's icon. This is convenient for programs that you actually need, but for those you don't, it merely drains system resources, slowing down your computer. See resources below for how to limit programs that load at start-up.
Step3
Turn Windows features and visual effects Off. Some features that come bundled with Windows need to be turned on by you, while some come turned on by default. Turn off any of these features that you do not use, because they each take up system resources. See Resources below for how to turn off Vista features and visual effects. You can also speed up your Windows Vista system if you disable some of the visual effects that it comes with. You'll be trading off some of the bells and whistles, but you get efficiency in exchange
Step4
Defragment your hard drive. Fragmentation slows down your system by causing your hard disk to work harder, draining system resources. The Vista Disk Defragmenter is designed to re-arrange the fragmented data, reducing the system resources your hard drive needs to use when the data is fragmented. See Resources below for how to defragment your PC.
Step5
Clean up your computer's hard disk. Deleting unnecessary files from your hard disk frees up hard disk space and optimizes your computer's performance. This includes temporary files, some system files and files in your Recycle Bin.
Step6
Run fewer programs simultaneously. One fast and simple way to optimizing Windows Vista performance is to limit the number of programs that you run at the same time. Having 6 programs open along with a half-dozen browser windows and a few email messages while you IM your friends tends to bog down the efficiency of your computer system. Close as many programs as you without affecting what you are doing.
Step7
Reboot your computer. If closing programs you have running does not help speed up your system, try rebooting your computer. This can help fix some of your performance problems, especially if you cant pinpoint the exact cause.
Step8
Install more memory. Adding more memory to your PC is a sure-fire solution to making your Vista system run faster. Very often, the reason your PC runs slowly is because it does not have enough memory. If you go to the trouble of adding memory, add at least 2GB; it won't cost you that much more, but will significantly boost your system performance.You may also use Windows ReadyBoost to increase the amount of memory available to your PC (see Resources below for how to use Windows ReadyBoost).