HP 15-f004dx User Guide - Page 9

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