Dell Precision 5550 Service Manual page 4

Removing the system board........................................................................................................................................ 39
Installing the system board............................................................................................................................................41
Palm-rest and keyboard assembly.....................................................................................................................................44
Removing the palm-rest and keyboard assembly......................................................................................................44
Installing the palm-rest and keyboard assembly........................................................................................................ 45
3 Drivers and downloads................................................................................................................ 46
4 System setup............................................................................................................................. 47
Entering BIOS setup program............................................................................................................................................ 47
Navigation keys....................................................................................................................................................................47
Boot Sequence.................................................................................................................................................................... 48
One time boot menu........................................................................................................................................................... 48
System setup options......................................................................................................................................................... 48
Clearing CMOS settings..................................................................................................................................................... 57
Clearing BIOS (System Setup) and System passwords.................................................................................................58
5 Troubleshooting.........................................................................................................................59
System diagnostic lights.....................................................................................................................................................59
SupportAssist diagnostics.................................................................................................................................................. 60
Recovering the operating system..................................................................................................................................... 60
Flashing the BIOS................................................................................................................................................................60
Flea power release............................................................................................................................................................... 61
WiFi power cycle.................................................................................................................................................................. 61
Flashing BIOS (USB key).................................................................................................................................................... 61
Backup media and recovery options................................................................................................................................. 62
6 Getting help and contacting Dell..................................................................................................63
4 Contents