Dell Vostro 5090 Service Manual page 4

Installing the chassis fan............................................................................................................................................... 35
Power supply unit................................................................................................................................................................ 36
Removing the power-supply unit.................................................................................................................................36
Installing the power-supply unit................................................................................................................................... 40
Heatsink assembly...............................................................................................................................................................45
Removing the processor fan and heat-sink assembly.............................................................................................. 45
Installing the processor fan and heat-sink assembly.................................................................................................45
Processor..............................................................................................................................................................................46
Removing the processor...............................................................................................................................................46
Installing the processor................................................................................................................................................. 47
System board....................................................................................................................................................................... 49
Removing the system board........................................................................................................................................ 49
Installing the system board...........................................................................................................................................52
3 System setup.............................................................................................................................56
Accessing System Setup....................................................................................................................................................56
Navigation Keys...................................................................................................................................................................56
System setup options......................................................................................................................................................... 57
General screen options................................................................................................................................................. 57
System Configuration screen options.........................................................................................................................58
Video screen options.....................................................................................................................................................59
Security screen options................................................................................................................................................ 59
Secure Boot screen options.........................................................................................................................................60
Intel Software Guard Extensions screen options....................................................................................................... 61
Performance screen options.........................................................................................................................................61
Power Management screen options........................................................................................................................... 62
POST Behavior screen options....................................................................................................................................62
Virtualization support screen options..........................................................................................................................63
Wireless screen options................................................................................................................................................ 63
Advanced configuration options.................................................................................................................................. 63
Maintenance screen options........................................................................................................................................ 63
System Log screen options.......................................................................................................................................... 64
SupportAssist System Resolution............................................................................................................................... 64
Updating the BIOS in Windows ........................................................................................................................................ 64
Updating your system BIOS using a USB flash drive......................................................................................................65
System and setup password..............................................................................................................................................65
Assigning a system setup password........................................................................................................................... 66
Deleting or changing an existing system setup password........................................................................................66
4 Troubleshooting......................................................................................................................... 68
Enhanced Pre-Boot System Assessment (ePSA) diagnostics......................................................................................68
Running the ePSA diagnostics.....................................................................................................................................68
WiFi power cycle................................................................................................................................................................. 68
5 Getting help...............................................................................................................................70
Contacting Dell.....................................................................................................................................................................70
4 Contents