Dell Inspiron 3020 Small Desktop Service Manual - Page 4

Installing the coin-cell battery...31 Media-card reader (optional)...32 Removing the media-card reader...32 Installing the media-card reader...33 Power supply unit...34 Removing the power supply unit...34 Installing the power supply unit...36 Antenna modules...37 Removing the antenna modules...37 Installing the antenna modules...38 Fan shroud...39 Removing the fan shroud...39 Installing the fan shroud...40 Processor fan and heat-sink assembly...41 Removing the fan and heat-sink assembly...41 Installing the fan and heat-sink assembly...42 Processor...43 Removing the processor...43 Installing the processor...44 System board...45 Removing the system board...45 Installing the system board...48 Recommended tools...51 Screw list...52 Major components of Inspiron 3020 Small Desktop 52 Chapter 3: Drivers and downloads 55 Chapter 4: BIOS setup...56 Entering BIOS setup program...56 Navigation keys...56 One time boot menu...56 System setup options...57 Updating the BIOS...66 Updating the BIOS in Windows...66 Updating the BIOS using the USB drive in Windows 67 Updating the BIOS from the F12 One-Time boot menu 67 System and setup password...68 Assigning a system setup password...68 Deleting or changing an existing system setup password 69 Clearing CMOS settings...69 Clearing BIOS (System Setup) and System passwords 69 Chapter 5: Troubleshooting...70 Locate the Service Tag or Express Service Code of your Dell computer 70 SupportAssist diagnostics...70 Power-Supply Unit Built-in Self-Test ...70 System diagnostic lights...70 Recovering the operating system...72 4 Contents