Running on external AC power ............................................................................................................................ 35
HP CoolSense ....................................................................................................................................................... 36
Shutting down the computer ............................................................................................................................... 36
7 Maintaining your computer .......................................................................................................................... 38
Improving performance ....................................................................................................................................... 38
Handling drives .................................................................................................................................. 38
Using Disk Defragmenter .................................................................................................................. 39
Using Disk Cleanup ............................................................................................................................ 39
Updating programs and drivers .......................................................................................................................... 39
Cleaning your computer ...................................................................................................................................... 40
Cleaning procedures .......................................................................................................................... 40
Locating your security software .......................................................................................................................... 42
Using passwords .................................................................................................................................................. 42
Setting Windows passwords ............................................................................................................. 43
Using antivirus software ................................................................................................................... 44
Using firewall software ..................................................................................................................... 44
Installing software updates ................................................................................................................................. 44
Securing your wireless network .......................................................................................................................... 45
ix