Using the power meter and power settings

37

Running on battery power

37

Removing a user-replaceable battery

37

Finding battery information

38

Conserving battery power

38

Identifying low battery levels

38

Resolving a low battery level

39

Resolving a low battery level when external power is available

39

Resolving a low battery level when no power source is available

39

Resolving a low battery level when the computer cannot exit Hibernation

39

Storing a user-replaceable battery

39

Disposing of a user-replaceable battery

40

Replacing a user-replaceable battery

40

Running on external AC power

40

Troubleshooting power problems

41

HP CoolSense (select models only)

41

Refreshing your software content with Intel Smart Connect Technology (select models only)

41

Shutting down (turning off) the computer

42

7 Managing and sharing information

43

Using a USB device

43

Connecting a USB device

44

Removing a USB device

44

Inserting and removing a digital storage card

45

Using optical drives

46

Inserting an optical disc

47

Tray-load

47

Removing an optical disc

48

Tray-load

48

When the disc tray opens normally

48

When the disc tray fails to open normally

48

Sharing data and drives and accessing software

49

8 Maintaining your computer

51

Improving performance

51

Handling drives

51

Replacing a hard drive

52

Using HP 3D DriveGuard (select models only)

54

Using Disk Defragmenter

54

Using Disk Cleanup

55

Adding or replacing memory modules

55

vii

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HP 15.6 E0L72UAABA, 15.6 E8B15UA#ABA, 15.6 E8B17UA#ABA, 15.6 E8B14UA#ABA, 15.6 E8B16UA#ABA Managing and sharing information