Maintenance & Service Guide HP Elite 7300 and 7500 Microtower, HP Pro 3300 and 3305 Microtower and HP Pro 3300 Small Form Factor

Removing the Hard Drive ................................................................................ 123
Power Switch .................................................................................................................................... 127
Front USB Assembly ........................................................................................................................ 129
Fan Assembly ................................................................................................................................... 132
Fan Sink ........................................................................................................................................... 134
Processor ......................................................................................................................................... 136
Power Supply ................................................................................................................................... 138
System Board ................................................................................................................................... 140
Battery .............................................................................................................................................. 142
Appendix A Troubleshooting Without Diagnostics .................................................................................... 144
Safety and Comfort .......................................................................................................................... 144
Before You Call for Technical Support ............................................................................................. 144
Helpful Hints ..................................................................................................................................... 145
Solving General Problems ................................................................................................................ 147
Solving Power Problems .................................................................................................................. 151
Solving Hard Drive Problems ........................................................................................................... 153
Solving Media Card Reader Problems ............................................................................................. 156
Solving Display Problems ................................................................................................................. 158
Solving Audio Problems ................................................................................................................... 163
Solving Printer Problems .................................................................................................................. 165
Solving Keyboard and Mouse Problems .......................................................................................... 167
Solving Hardware Installation Problems ........................................................................................... 169
Solving Network Problems ............................................................................................................... 171
Solving Memory Problems ............................................................................................................... 174
Solving Processor Problems ............................................................................................................ 176
Solving CD-ROM and DVD Problems .............................................................................................. 176
Solving USB Flash Drive Problems .................................................................................................. 179
Solving Front Panel Component Problems ...................................................................................... 180
Solving Internet Access Problems .................................................................................................... 180
Solving Software Problems .............................................................................................................. 182
Contacting Customer Support .......................................................................................................... 184
Appendix B HP PC Hardware Diagnostics .................................................................................................. 185
Why run HP PC Hardware Diagnostics ............................................................................................ 185
How to access and run HP PC Hardware Diagnostics ..................................................................... 186
Downloading HP PC Hardware Diagnostics to a USB device .......................................................... 187
Appendix C Backup and Recovery .............................................................................................................. 188
Restoring and recovering in Windows 7 ........................................................................................... 188
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