Service Manual

48 Replacing the sensor board........................................................................................................77
Procedure............................................................................................................................................................................. 77
Post-requisites..................................................................................................................................................................... 77
49 Downloading drivers................................................................................................................. 78
Downloading the audio driver.............................................................................................................................................78
Downloading the graphics driver....................................................................................................................................... 78
Downloading the USB 3.0 driver....................................................................................................................................... 78
Downloading the Wi-Fi driver.............................................................................................................................................78
Downloading the media-card reader driver......................................................................................................................79
Downloading the chipset driver......................................................................................................................................... 79
Downloading the network driver....................................................................................................................................... 79
50 System setup...........................................................................................................................80
Boot Sequence.................................................................................................................................................................... 80
Navigation keys....................................................................................................................................................................80
System setup........................................................................................................................................................................81
Entering BIOS setup program.............................................................................................................................................81
System setup options.......................................................................................................................................................... 81
System and setup password..............................................................................................................................................85
Assigning a system setup password........................................................................................................................... 85
Deleting or changing an existing system setup password........................................................................................86
Clearing CMOS settings............................................................................................................................................... 86
Clearing BIOS (System Setup) and System passwords...........................................................................................86
51 Troubleshooting........................................................................................................................87
Flashing the BIOS................................................................................................................................................................ 87
Enhanced Pre-Boot System Assessment (ePSA) diagnostics......................................................................................87
Running the ePSA Diagnostics.....................................................................................................................................87
System diagnostic lights.....................................................................................................................................................88
Flea power release...............................................................................................................................................................89
WiFi power cycle................................................................................................................................................................. 89
52 Getting help and contacting Dell................................................................................................90
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