Factory-sealed battery ............................................................................................................................................36
Running on external power .............................................................................................................................................36
7 Maintaining your computer..................................................................................................................................................38
Improving performance...................................................................................................................................................38
Using Disk Defragmenter.........................................................................................................................................38
Using Disk Cleanup...................................................................................................................................................38
Updating programs and drivers.......................................................................................................................................39
Updating programs only ..........................................................................................................................................39
Updating drivers only ..............................................................................................................................................39
Cleaning your computer...................................................................................................................................................40
Using passwords ..............................................................................................................................................................44
Setting Windows passwords....................................................................................................................................44
Using internet security software.....................................................................................................................................46
Using antivirus software..........................................................................................................................................46
Using firewall software ............................................................................................................................................46
Installing software updates.............................................................................................................................................47
Securing your wireless network ......................................................................................................................................47
9 Using Setup Utility (BIOS) ....................................................................................................................................................49
Starting Setup Utility (BIOS) ............................................................................................................................................49
Updating Setup Utility (BIOS) ..........................................................................................................................................49
Determining the BIOS version .................................................................................................................................49
Preparing for a BIOS update ....................................................................................................................................50
Downloading a BIOS update ............................................................................................................................50
Installing a BIOS update...................................................................................................................................50
vii