Compaq Pro 4300 Maintenance & Service Guide Pro 4300 All-in-One Business P - Page 6

Fan ...63 Converter Board ...65 Sidekey Board ...67 System Board Shield ...69 WLAN Module ...71 Speakers ...73 Stand bracket ...75 System Board ...77 Hard Drive and Optical Drive Cables and Connectors 80 Display Cable ...82 Front Bezel ...84 Display Panel ...85 Power Switch Assembly ...89 7 Troubleshooting Without Diagnostics ...91 Safety and Comfort ...91 Before You Call for Technical Support 91 Helpful Hints ...92 Solving General Problems ...94 Solving Power Problems ...98 Solving Hard Drive Problems ...100 Solving Media Card Reader Problems 103 Solving Display Problems ...105 Solving Audio Problems ...110 Solving Printer Problems ...112 Solving Keyboard and Mouse Problems 114 Solving Hardware Installation Problems 116 Solving Network Problems ...118 Solving Memory Problems ...121 Solving Processor Problems ...123 Solving CD-ROM and DVD Problems 123 Solving USB Flash Drive Problems 125 Solving Front Panel Component Problems 127 Solving Internet Access Problems ...127 Solving Software Problems ...129 Contacting Customer Support ...131 8 HP PC Hardware Diagnostics ...132 Why run HP PC Hardware Diagnostics 132 How to access and run HP PC Hardware Diagnostics 133 Downloading HP PC Hardware Diagnostics to a USB device 134 vii