Dell OptiPlex 7090 Small Form Factor Service Manual - Page 5

Updating the BIOS in Windows

................................................................................................................................

82

Updating the BIOS in Linux and Ubuntu

................................................................................................................

83

Updating the BIOS using the USB drive in Windows

..........................................................................................

83

Updating the BIOS from the F12 One-Time boot menu

.....................................................................................

83

System and setup password

...........................................................................................................................................

84

Assigning a system setup password

.......................................................................................................................

84

Deleting or changing an existing system setup password

.................................................................................

85

Chapter 5: Troubleshooting

.........................................................................................................

86

SupportAssist diagnostics

...............................................................................................................................................

86

Diagnostic LED behavior

..................................................................................................................................................

86

Recovering the operating system

..................................................................................................................................

87

Flashing the BIOS

..............................................................................................................................................................

88

Flashing BIOS (USB key)

.................................................................................................................................................

88

Backup media and recovery options

.............................................................................................................................

88

WiFi power cycle

...............................................................................................................................................................

88

Drain residual flea power (perform hard reset)

.........................................................................................................

89

Chapter 6: Getting help and contacting Dell

................................................................................

90

Contents

5

Section	Page
OptiPlex 7090 Small Form Factor Service Manual	1
Contents	3
Working inside your computer	6
Safety instructions	6
Before working inside your computer	6
Safety precautions	7
Electrostatic discharge—ESD protection	7
ESD field service kit	8
Transporting sensitive components	9
After working inside your computer	9
Removing and installing components	10
Recommended tools	10
Screw List	10
Major components of your system	11
Side cover	12
Removing the side cover	12
Installing the side cover	14
Intrusion switch	15
Removing the intrusion switch	15
Installing the intrusion switch	15
Front bezel	16
Removing the front bezel	16
Installing the front bezel	17
Hard drive	19
Removing the 2.5/3.5-inch hard-drive caddy	19
Removing the 2.5-inch hard-drive	20
Installing the 2.5/3.5-inch hard-drive caddy	21
Installing the 2.5-inch hard-drive	22
Solid-state drive	23
Removing the M.2 2230 solid-state drive	23
Installing the M.2 2230 solid-state drive	24
Removing the M.2 2280 solid-state drive	25
Installing the M.2 2280 solid-state drive	26
Optical drive	28
Removing the hard-drive and optical-drive bracket	28
Installing the hard-drive and optical-drive bracket	29
Removing the slim optical-drive	31
Installing the slim optical-drive	32
SD-card reader	33
Removing the SD-card reader	33
Installing the SD-card reader	34
WLAN card	35
Removing the WLAN card	35
Installing the WLAN card	36
Fan and heat-sink assembly	38
Removing the fan and heat-sink assembly	38
Installing the fan and heat-sink assembly	38
Graphics card	39
Removing the graphics card	39
Installing the graphics card	40
Coin-cell battery	41
Removing the coin-cell battery	41
Installing the coin-cell battery	42
Memory modules	43
Removing the memory modules	43
Installing the memory modules	44
Processor	45
Removing the processor	45
Installing the processor	46
Power button	48
Removing the power button	48
Installing the power button	48
Power-supply unit	49
Removing the power-supply unit	49
Installing the power-supply unit	52
System board	55
System board callouts - 7090 Small Form Factor	55
Removing the system board	56
Installing the system board	59
Software	63
Drivers and downloads	63
System setup	64
Boot menu	64
Navigation keys	64
Boot Sequence	65
System setup options	65
Overview	69
Boot Configuration	71
Integrated Devices	72
Storage	73
Display	74
Connection	74
Power	75
Security	76
Passwords	78
Update Recovery	79
System Management	80
Keyboard	81
Virtualization	81
Performance	81
System Logs	82
Updating the BIOS	82
Updating the BIOS in Windows	82
Updating the BIOS in Linux and Ubuntu	83
Updating the BIOS using the USB drive in Windows	83
Updating the BIOS from the F12 One-Time boot menu	83
System and setup password	84
Assigning a system setup password	84
Deleting or changing an existing system setup password	85
Troubleshooting	86
SupportAssist diagnostics	86
Diagnostic LED behavior	86
Recovering the operating system	87
Flashing the BIOS	88
Flashing BIOS (USB key)	88
Backup media and recovery options	88
WiFi power cycle	88
Drain residual flea power (perform hard reset)	89

Dell OptiPlex 7090 Small Form Factor Service Manual - Page 5

Troubleshooting, Getting help and contacting Dell

Page 5 highlights