HP Compaq Presario,Presario 700 User Manual page 72

Select a screen saver that does not generate a lot of graphics
or motion.
Reduce audio volume or use headphones.
Exit modem programs when you are not using them.
Remove PC Cards when you are not using them.
Remove CDs or DVDs when you are not using them.
Use Sleep or Hibernation mode to turn off your Notebook
when you are not using it.
Mobile Internet PC User's Guide
Presario 700 Series
Caring for Your Battery
6–9