System Board

165

Removing the System Board

165

Installing the System Board

167

4 Troubleshooting Your System . . . . . . . . 169

Safety First—For You and Your System

169

Troubleshooting System Startup Failure

169

Troubleshooting External Connections

169

Troubleshooting the Video Subsystem

170

Troubleshooting a USB Device

170

Troubleshooting a Serial I/O Device

171

Troubleshooting a NIC

171

Troubleshooting a Wet System

172

Troubleshooting a Damaged System

174

Troubleshooting the System Battery

174

Troubleshooting Power Supplies

175

Troubleshooting System Cooling Problems

176

Troubleshooting a Fan

176

Troubleshooting System Memory

177

Troubleshooting an Internal USB Key

179

Troubleshooting an Optical Drive

180

Troubleshooting a Hard Drive

181

Contents

9

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