What you can do to improve a little bit of performance is to go to start>run and in the box type msconfig, then click on the startup tab. from there you will see all the programs starting up upon system startup. Many of theses aren't nessecary to be on the startup and will drag your system down. Compare those items against
this list and uncheck any you don't find as nessecary. remember you aren't deleting them only stopping them from running when not in use therefore creating more free system resources.