Increase your RAM and so system speed

 1). Start any application, say Word.

      Open some large documents.

 2). Press CTRL+SHIFT+ESC /  CRTL+ALT+DLT to open Windows Task Manager
       and click Processes tab and sort the list in descending
       order on Mem Usage. You will notice that WINWORD.EXE
       will be somewhere at the top, using multiple MBs of
       memory.



3). Now switch to Word and simply
      minimize it. (Don't use the Minimize All Windows option
      of the task bar).

4). Now go back to the Windows Task Manager
     and see where WINWORD.EXE is listed. Most probably you
     will not find it at the top. You will typically have to scroll to the
     bottom of the list to find Word. Now check out the
     amount of RAM it is using. Surprised? The memory utilization has reduced
     by a huge amount.

5). Minimize each application that you are
     currently not working on by clicking on the Minimize button & you can
     increase the amount of available RAM by a substantial margin. Depending
     upon the number and type of applications you use together, the
    difference can be as much as 50 percent of extra RAM.

        In any multitasking system, minimizing an
    application means that it won't be utilized by the user right now.
    Therefore, the OS automatically makes the application use virtual memory &
    keeps bare minimum amounts of the code in physical RAM.