Dell G5 5090 Service Manual - Page 5

Diagnostic error messages

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

74

System error messages

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

76

Recovering the operating system

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

77

Flashing BIOS (USB key)

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

77

Flashing the BIOS

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

77

WiFi power cycle

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

78

Flea power release

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

78

Enabling Intel Optane memory

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

78

Disabling Intel Optane memory

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

79

6 Getting help and contacting Dell

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

80

Contents

5

Section	Page
G5 5090 Service Manual	3
Working inside your computer	6
Safety instructions	6
Before working inside your computer	6
Before you begin	6
Electrostatic discharge—ESD protection	7
ESD field service kit	7
Transporting sensitive components	8
After working inside your computer	8
Removing and installing components	9
Inside view of your computer	9
System-board components	10
Recommended tools	11
Screw list	11
Left-side cover	12
Removing the left-side cover	12
Installing the left-side cover	12
Light bar	13
Removing the light bar	13
Installing the light bar	14
Front cover	15
Removing the front cover	15
Installing the front cover	16
2.5-inch hard drive	17
Removing the 2.5-inch hard drive	17
Installing the 2.5-inch hard drive	19
3.5-inch hard drive	20
Removing the 3.5-inch hard drive	20
Installing the 3.5-inch hard drive	22
Chassis fan	23
Removing the chassis fan	23
Installing the chassis fan	23
Memory modules	25
Removing the memory modules	25
Installing the memory modules	26
Wireless card	27
Removing the wireless card	27
Installing the wireless card	28
Solid-state drive/Intel Optane	30
Removing the solid-state drive/Intel Optane	30
Installing the solid-state drive/Intel Optane	31
Graphics card	33
Removing the graphics card	33
Installing the graphics card	34
Coin-cell battery	35
Removing the coin-cell battery	35
Installing the coin-cell battery	36
Power-supply unit	36
Removing the power-supply unit	36
Installing the power-supply unit	38
Processor fan and heat-sink assembly	41
Removing the processor fan and heat-sink assembly	41
Installing the processor fan and heat-sink assembly	42
Processor	43
Removing the processor	43
Installing the processor	44
VR heat sink	45
Removing the VR heat sink	45
Installing the VR heat sink	46
LED daughter board	47
Removing the LED daughter board	47
Installing the LED daughter board	48
System board	49
Removing the system board	49
Installing the system board	52
Device drivers	57
Operating system	57
Downloading the audio driver	57
Downloading the graphics driver	57
Downloading the USB driver	58
Downloading the WiFi driver	58
Downloading the chipset driver	59
Downloading the network driver	59
System setup	61
System setup	61
BIOS overview	61
Entering BIOS setup program	61
Navigation keys	61
Boot Sequence	61
System setup options	62
System and setup password	67
Assigning a system setup password	68
Deleting or changing an existing system setup password	68
Clearing CMOS settings	68
Clearing BIOS (System Setup) and System passwords	69
Troubleshooting	71
Enhanced Pre-Boot System Assessment (ePSA) diagnostics	71
Running the ePSA diagnostics	71
Diagnostics	71
System diagnostic lights	73
Diagnostic error messages	74
System error messages	76
Recovering the operating system	77
Flashing BIOS (USB key)	77
Flashing the BIOS	77
WiFi power cycle	78
Flea power release	78
Enabling Intel Optane memory	78
Disabling Intel Optane memory	79

Dell G5 5090 Service Manual - Page 5

Enabling Intel Optane memory, Flashing BIOS USB key

Page 5 highlights