Selecting a power plan ....................................................................................................................... 40
Running on battery power .................................................................................................................. 41
Conserving battery power .................................................................................................. 42
HP CoolSense .................................................................................................................................... 45
Using a USB device ........................................................................................................................... 47
Connecting a USB device .................................................................................................. 47
Removing a USB device .................................................................................................... 48
8 Maintaining your computer .......................................................................................................................... 51
Improving performance ...................................................................................................................... 51
Using HP 3D DriveGuard ................................................................................................... 51
Using Disk Defragmenter ................................................................................................... 52
Using Disk Cleanup ........................................................................................................... 52
Cleaning your computer ..................................................................................................................... 54
Using passwords ................................................................................................................................ 56
vii