Dell OptiPlex 5490 Service Manual page 5

Middle frame.......................................................................................................................................................................83
Removing the middle frame...................................................................................................................................... 83
Installing the middle frame........................................................................................................................................ 85
Chapter 3: Drivers and downloads............................................................................................... 87
Chapter 4: System setup............................................................................................................. 88
BIOS overview................................................................................................................................................................... 88
Entering BIOS setup program........................................................................................................................................ 88
Boot Sequence...................................................................................................................................................................88
Navigation keys..................................................................................................................................................................89
System setup options.......................................................................................................................................................89
Updating the BIOS............................................................................................................................................................ 97
Updating the BIOS in Windows................................................................................................................................ 97
Updating the BIOS in Linux and Ubuntu................................................................................................................ 98
Updating the BIOS using the USB drive in Windows..........................................................................................98
Updating the BIOS from the F12 One-Time boot menu.....................................................................................98
System and setup password...........................................................................................................................................99
Assigning a system setup password....................................................................................................................... 99
Deleting or changing an existing system setup password............................................................................... 100
Clearing CMOS settings................................................................................................................................................ 100
Clearing BIOS (System Setup) and System passwords.........................................................................................100
Chapter 5: Troubleshooting........................................................................................................ 101
Display built-in self test...................................................................................................................................................101
SupportAssist diagnostics.............................................................................................................................................. 101
Running the SupportAssist Pre-Boot System Performance Check............................................................... 101
Diagnostics........................................................................................................................................................................ 102
Recovering the operating system................................................................................................................................103
WiFi power cycle..............................................................................................................................................................103
Flea power release...........................................................................................................................................................104
Chapter 6: Getting help and contacting Dell...............................................................................105
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