Dell Inspiron 5391 Service Manual page 5

Entering BIOS setup program............................................................................................................................................66
Navigation keys....................................................................................................................................................................66
Boot Sequence.....................................................................................................................................................................67
System setup options......................................................................................................................................................... 67
Clearing CMOS settings..................................................................................................................................................... 75
Clearing BIOS (System Setup) and System passwords.................................................................................................75
5 Troubleshooting......................................................................................................................... 76
Enhanced Pre-Boot System Assessment (ePSA) diagnostics......................................................................................76
Running the ePSA diagnostics..................................................................................................................................... 76
System diagnostic lights..................................................................................................................................................... 76
Diagnostics............................................................................................................................................................................77
M-BIST............................................................................................................................................................................78
LCD Built-In Self-Test (BIST)...................................................................................................................................... 78
Recovering the operating system......................................................................................................................................78
Flashing BIOS (USB key)....................................................................................................................................................79
Flashing the BIOS................................................................................................................................................................ 79
Flea power release...............................................................................................................................................................79
Wi-Fi power cycle................................................................................................................................................................80
6 Getting help and contacting Dell.................................................................................................. 81
Contents 5