Shutting down the computer ............................................................................................................... 37
Using a USB device ........................................................................................................................... 39
Connecting a USB device .................................................................................................. 39
Removing a USB device .................................................................................................... 40
Using optical drives ............................................................................................................................ 41
Inserting an optical disc ..................................................................................................... 42
Removing an optical disc ................................................................................................... 43
8 Maintaining your computer .......................................................................................................................... 45
Improving performance ...................................................................................................................... 45
Handling drives .................................................................................................................. 45
Replacing a hard drive ....................................................................................................... 45
Using Disk Defragmenter ................................................................................................... 48
Using Disk Cleanup ........................................................................................................... 48
Cleaning your computer ..................................................................................................................... 51
Using passwords ................................................................................................................................ 54
Using antivirus software ..................................................................................................... 56
Using firewall software ....................................................................................................... 57
Installing software updates ................................................................................................................. 57
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