System Diagnostics Testing Options

33

Using the Custom Test Options

33

Selecting Devices for Testing

33

Selecting Diagnostics Options

33

Viewing Information and Results

34

5 Troubleshooting Your System

Safety First—For You and Your System

35

External Connections

35

Checking Basic Power Problems

35

Start-Up Routine

35

Checking the Equipment

36

Troubleshooting the Video Subsystem

36

Troubleshooting the Keyboard

37

Troubleshooting the Mouse

37

Troubleshooting Basic I/O Functions

38

Troubleshooting a Serial I/O Device

38

Troubleshooting a USB Device

39

Troubleshooting a Network Adapter

39

Responding to a Systems Management Software Alert Message

40

Inside the System

40

Removing and Replacing the Bezel

41

Opening the System

42

Closing the System

43

Troubleshooting a Wet System

44

Troubleshooting a Damaged System

44

Troubleshooting the System Battery

45

Troubleshooting the Power Supply

46

Troubleshooting System Cooling Problems

46

Troubleshooting a Fan

46

4

Contents

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Image 4
Dell 745N Safety First-For You and Your System, Troubleshooting the Video Subsystem, Troubleshooting a Serial I/O Device