HP ProBook 4740s Notebook-PC User Manual
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Inserting or removing the battery ....................................................................................... 43
Charging a battery ............................................................................................................. 44
Maximizing battery life ....................................................................................................... 45
Managing low battery levels .............................................................................................. 45
Identifying low battery levels ............................................................................. 45
Resolving a low battery level ............................................................................. 46
Conserving battery power .................................................................................................. 46
Storing a battery ................................................................................................................ 46
Disposing of a used battery ............................................................................................... 47
Replacing the battery ......................................................................................................... 47
Handling drives ................................................................................................................................... 49
Using the optional security screw ....................................................................................................... 50
Removing or replacing the service door ............................................................................................. 50
Removing the hard drive .................................................................................................... 53
Installing a hard drive ......................................................................................................... 55
When the disc tray opens normally .................................................. 58
When the disc tray fails to open ....................................................... 59
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