HP ProBook 4435s Notebook-PC User Manual
Page 9

The computer is unable to start up .................................................................................... 83
The computer screen is blank ............................................................................................ 83
Software is functioning abnormally .................................................................................... 84
The computer is on but not responding ............................................................................. 84
The computer is unusually warm ....................................................................................... 84
An external device is not working ...................................................................................... 84
The wireless network connection is not working ................................................................ 85
The optical disc tray does not open for removal of a CD or DVD ...................................... 85
The computer does not detect the optical drive ................................................................. 86
A disc does not play ........................................................................................................... 86
A movie is not visible on an external display ..................................................................... 86
The process of burning a disc does not begin, or it stops before completion .................... 87
Contacting customer support ............................................................................................................. 87
Labels ................................................................................................................................................. 88
Cleaning products .............................................................................................................................. 89
Cleaning procedures .......................................................................................................................... 90
Input power ......................................................................................................................................... 92
Operating environment ....................................................................................................................... 93
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