4 Troubleshooting Your System

129

Safety First—For You and Your System

129

Troubleshooting System Startup Failure

129

Troubleshooting External Connections

130

Troubleshooting the Video Subsystem

130

Troubleshooting a USB Device

130

Troubleshooting a Serial I/O Device

131

Troubleshooting a NIC

131

Troubleshooting a Wet System

132

Troubleshooting a Damaged System

134

Troubleshooting the System Battery

134

Troubleshooting the Power Supply

135

Troubleshooting System Cooling Problems

135

Troubleshooting a Fan

136

Troubleshooting System Memory

137

Troubleshooting an Internal USB Key

139

Troubleshooting an Optical Drive

140

Troubleshooting a Hard Drive

141

Troubleshooting the PERC S300 Controller

142

Troubleshooting Expansion Cards

143

Troubleshooting the Processor

144

8

Contents

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Dell NX200 owner manual Troubleshooting Your System 129, 136