Dell Inspiron 15 5508 Service Manual page 4

Installing the heat sink...................................................................................................................................................36
Display assembly.................................................................................................................................................................. 37
Removing the display assembly................................................................................................................................... 37
Installing the display assembly......................................................................................................................................39
Power-adapter port............................................................................................................................................................ 40
Removing the power-adapter port............................................................................................................................. 40
Installing the power-adapter port.................................................................................................................................41
Speakers............................................................................................................................................................................... 42
Removing the speakers.................................................................................................................................................42
Installing the speakers................................................................................................................................................... 43
Power button with optional fingerprint reader................................................................................................................ 44
Removing the power button with optional fingerprint reader................................................................................. 45
Installing the power button with optional fingerprint reader....................................................................................45
Touchpad..............................................................................................................................................................................46
Removing the touchpad............................................................................................................................................... 46
Installing the touchpad.................................................................................................................................................. 47
I/O board.............................................................................................................................................................................. 49
Removing the I/O board...............................................................................................................................................49
Installing the I/O board................................................................................................................................................. 49
System board.......................................................................................................................................................................50
Removing the system board........................................................................................................................................ 50
Installing the system board...........................................................................................................................................52
Palm-rest and keyboard assembly.................................................................................................................................... 55
Removing the palm-rest and keyboard assembly..................................................................................................... 55
Installing the palm-rest and keyboard assembly........................................................................................................56
3 Drivers and downloads................................................................................................................ 58
4 System setup.............................................................................................................................59
Entering BIOS setup program............................................................................................................................................59
Navigation keys................................................................................................................................................................... 59
One time boot menu........................................................................................................................................................... 59
System setup options......................................................................................................................................................... 60
Updating the BIOS in Windows ........................................................................................................................................ 67
Updating BIOS on systems with BitLocker enabled................................................................................................. 68
Updating your system BIOS using a USB flash drive................................................................................................68
Updating the Dell BIOS in Linux and Ubuntu environments.......................................................................................... 69
Flashing the BIOS from the F12 One-Time boot menu.................................................................................................. 69
System and setup password.............................................................................................................................................. 72
Assigning a system setup password............................................................................................................................72
Deleting or changing an existing system setup password........................................................................................73
Clearing CMOS settings............................................................................................................................................... 73
Clearing BIOS (System Setup) and System passwords........................................................................................... 73
5 Troubleshooting......................................................................................................................... 74
SupportAssist diagnostics.................................................................................................................................................. 74
Built-in self-test (BIST).......................................................................................................................................................74
Recovering the operating system......................................................................................................................................74
System diagnostic lights..................................................................................................................................................... 75
4 Contents