Dell Inspiron 15-5568 Service Manual page 7

48 Replacing the sensor board........................................................................................................74
Procedure............................................................................................................................................................................. 74
Post-requisites..................................................................................................................................................................... 74
49 Downloading drivers................................................................................................................. 75
Downloading the audio driver.............................................................................................................................................75
Downloading the graphics driver....................................................................................................................................... 75
Intel USB 3.0 xHCI...............................................................................................................................................................75
Downloading the Wi-Fi driver.............................................................................................................................................75
Downloading the media-card reader driver......................................................................................................................76
Downloading the chipset driver......................................................................................................................................... 76
Downloading the network driver....................................................................................................................................... 76
50 System setup........................................................................................................................... 77
Boot Sequence.....................................................................................................................................................................77
Navigation keys.................................................................................................................................................................... 77
System setup........................................................................................................................................................................77
Entering BIOS setup program............................................................................................................................................ 78
System setup options..........................................................................................................................................................78
System and setup password..............................................................................................................................................82
Assigning a system setup password............................................................................................................................82
Deleting or changing an existing system setup password........................................................................................83
Clearing CMOS settings............................................................................................................................................... 83
Clearing BIOS (System Setup) and System passwords...........................................................................................83
51 Troubleshooting........................................................................................................................84
Flashing the BIOS................................................................................................................................................................ 84
Flashing BIOS (USB key)....................................................................................................................................................84
Enhanced Pre-Boot System Assessment (ePSA) diagnostics......................................................................................84
Running the ePSA Diagnostics.................................................................................................................................... 85
System diagnostic lights.....................................................................................................................................................85
Flea power release...............................................................................................................................................................86
Wi-Fi power cycle................................................................................................................................................................86
52 Getting help and contacting Dell................................................................................................ 87
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