The computer is running on virtual memory which means it uses the hard disk as a temporary memory. The bigger the system disk, the better to have comfortable space for virtual memory. Cleaning up the cookies can also speed up your computer. And check your computer for unneeded programs which you can delete via the MSConfig. Click on Start then click on Run and type MSCONFIG to run. From there, you will be given a list of programs. Just uncheck what you don’t need.