Dell Inspiron 15 3520 Service Manual page 5

Palm-rest and keyboard assembly................................................................................................................................ 93
Removing the palm-rest and keyboard assembly................................................................................................ 93
Installing the palmrest and keyboard assembly....................................................................................................95
Chapter 3: Drivers and downloads............................................................................................... 97
Chapter 4: System setup............................................................................................................. 98
Entering BIOS setup program........................................................................................................................................ 98
Navigation keys..................................................................................................................................................................98
One time boot menu......................................................................................................................................................... 98
System setup options.......................................................................................................................................................99
System and setup password......................................................................................................................................... 102
Assigning a system setup password......................................................................................................................103
Deleting or changing an existing system setup password............................................................................... 103
Clearing BIOS (System Setup) and System passwords.........................................................................................103
Updating the BIOS.......................................................................................................................................................... 104
Updating the BIOS in Windows.............................................................................................................................. 104
Updating the BIOS using the USB drive in Windows........................................................................................ 104
Updating the BIOS in Linux and Ubuntu.............................................................................................................. 104
Updating the BIOS from the F12 One-Time boot menu................................................................................... 104
Chapter 5: Troubleshooting....................................................................................................... 106
Handling swollen Lithium-ion batteries...................................................................................................................... 106
Locate the Service Tag or Express Service Code of your Dell computer ............................................106
System-diagnostic lights................................................................................................................................................107
SupportAssist diagnostics............................................................................................................................................. 108
Built-in self-test (BIST)..................................................................................................................................................108
M-BIST......................................................................................................................................................................... 108
LCD Built-in Self Test (BIST)................................................................................................................................. 109
Recovering the operating system................................................................................................................................109
WiFi power cycle.............................................................................................................................................................. 110
Drain residual flea power (perform hard reset)........................................................................................................ 110
Chapter 6: Getting help and contacting Dell................................................................................111
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