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Hood Sensor ....................................................................................................................... 237
System Board ...................................................................................................................... 238
Rear Fan ............................................................................................................................. 240
Changing from Desktop to Tower Configuration ....................................................................... 242
Port Cover ........................................................................................................................... 243
Power Supply, External ......................................................................................................... 244
Appendix A Battery Replacement .................................................................................... 245
Appendix B Power Cord Set Requirements ....................................................................... 248
General Requirements .......................................................................................................... 248
Japanese Power Cord Requirements ....................................................................................... 248
Country-Specific Requirements ............................................................................................... 249
Appendix C POST Error Messages .................................................................................... 250
POST Numeric Codes and Text Messages ............................................................................... 251
Interpreting POST Diagnostic Front Panel LEDs and Audible Codes ............................................. 259
Appendix D Troubleshooting Without Diagnostics ............................................................ 263
Safety and Comfort .............................................................................................................. 263
Before You Call for Technical Support ..................................................................................... 263
Helpful Hints ........................................................................................................................ 264
Solving General Problems ..................................................................................................... 266
Solving Power Problems ........................................................................................................ 270
Solving Diskette Problems ...................................................................................................... 272
Solving Hard Drive Problems ................................................................................................. 275
Solving Media Card Reader Problems .................................................................................... 278
Solving Display Problems ...................................................................................................... 280
Solving Audio Problems ........................................................................................................ 284
Solving Printer Problems ........................................................................................................ 286
Solving Keyboard and Mouse Problems .................................................................................. 288
Solving Hardware Installation Problems .................................................................................. 290
Solving Network Problems .................................................................................................... 292
Solving Memory Problems ..................................................................................................... 296
Solving Processor Problems ................................................................................................... 297
Solving CD-ROM and DVD Problems ...................................................................................... 298
Solving USB Flash Drive Problems .......................................................................................... 300
Solving Front Panel Component Problems ................................................................................ 302
Solving Internet Access Problems ............................................................................................ 302
Solving Software Problems .................................................................................................... 305
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