HP ProBook 450 G1 Notebook PC - Manual (Page 9)

Setting a MultiBoot Express prompt .................................................................................. 70
Entering MultiBoot Express preferences ........................................................................... 70
Using HP PC Hardware Diagnostics (UEFI) (select models only) ..................................................... 70
Downloading HP PC Hardware Diagnostics (UEFI) to a USB device ............................... 71
Appendix A Troubleshooting and support .................................................................................................... 72
Troubleshooting .................................................................................................................................. 72
The computer is unable to start up .................................................................................... 72
The computer screen is blank ............................................................................................ 72
Software is functioning abnormally .................................................................................... 72
The computer is on but is not responding .......................................................................... 72
The computer is unusually warm ....................................................................................... 73
An external device is not working ...................................................................................... 73
The wireless network connection is not working ................................................................ 73
The optical disc tray does not open for removal of a CD or DVD ...................................... 74
The computer does not detect the optical drive ................................................................. 75
A disc does not play ........................................................................................................... 75
A movie is not visible on an external display ..................................................................... 75
The process of burning a disc does not begin, or it stops before completion .................... 76
Contacting customer service .............................................................................................................. 76
Labels ................................................................................................................................................. 77
Appendix B Cleaning your computer ............................................................................................................. 78
Cleaning products .............................................................................................................................. 78
Cleaning procedures .......................................................................................................................... 78
Cleaning the display .......................................................................................................... 78
Cleaning the sides and cover ............................................................................................ 78
Cleaning the TouchPad and keyboard .............................................................................. 79
Appendix C Specifications .............................................................................................................................. 80
Input power ......................................................................................................................................... 80
Operating environment ....................................................................................................................... 80
Appendix D Electrostatic discharge .............................................................................................................. 81
Index ................................................................................................................................................................... 82
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