System Board

94

Removing the System Board

94

Installing the System Board

96

4 Troubleshooting Your System

99

Safety First—For You and Your System

99

Troubleshooting System Startup Failure

99

Troubleshooting External Connections

99

Troubleshooting the Video Subsystem

100

Troubleshooting a USB Device

100

Troubleshooting a Serial I/O Device

101

Troubleshooting a NIC

101

Troubleshooting a Wet System

102

Troubleshooting a Damaged System

103

Troubleshooting the System Battery

104

Troubleshooting Power Supply

105

Troubleshooting System Cooling Problems

105

Troubleshooting Cooling Fan

106

Troubleshooting System Memory

107

Troubleshooting an Internal USB Key

108

Troubleshooting an Optical Drive

109

Troubleshooting a Tape Backup Unit

110

Contents

7

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Dell E11S manual Troubleshooting Your System