User-replaceable battery ................................................................................................... 36
Finding battery information ................................................................................................ 36
Conserving battery power .................................................................................................. 37
Identifying low battery levels .............................................................................................. 37
Resolving a low battery level ............................................................................................. 37
Resolving a low battery level when external power is available ........................ 37
Resolving a low battery level when no power source is available ..................... 37
Resolving a low battery level when the computer cannot exit Hibernation ....... 38
Storing a user-replaceable battery ..................................................................................... 38
Disposing of a user-replaceable battery ............................................................................ 38
Replacing a user-replaceable battery ................................................................................ 38
Running on external AC power .......................................................................................................... 38
Troubleshooting power problems ...................................................................................... 39
Shutting down (turning off) the computer ........................................................................................... 39
7 Maintaining your computer .............................................................................................................................. 41
Improving performance ...................................................................................................................... 41
Using Disk Defragmenter ................................................................................................... 41
Using Disk Cleanup ........................................................................................................... 41
Adding or replacing memory modules ............................................................................... 41
Updating programs and drivers .......................................................................................................... 45
Cleaning your computer ..................................................................................................................... 45
Cleaning procedures .......................................................................................................... 46
Cleaning the display (All-in-Ones or Notebooks) .............................................. 46
Cleaning the sides or cover ............................................................................... 46
Cleaning the TouchPad, keyboard, or mouse ................................................... 46
Traveling with or shipping your computer ........................................................................................... 47
8 Securing your computer and information ........................................................................................................ 48
Using passwords ................................................................................................................................ 48
Setting Windows passwords .............................................................................................. 49
Setting Setup Utility (BIOS) passwords ............................................................................. 49
Using Internet security software ......................................................................................................... 49
Using antivirus software ..................................................................................................... 50
Using firewall software ....................................................................................................... 50
Installing software updates ................................................................................................................. 50
Installing critical security updates ...................................................................................... 50
Installing HP and third-party software updates ................
.................................................. 50
Securing your wireless network .......................................................................................................... 51
Backing up your software applications and information ..................................................................... 51
Using an optional security cable lock ................................................................................................. 51
ix