What should I do if I encounter POST error messages or diagnostic codes?
POST numeric codes and text messages provide guidance on resolving issues such as hardware configuration problems. Refer to the Maintenance and Service Guide, specifically chapters about POST errors starting from page 85 for detailed troubleshooting instructions corresponding to each code displayed on LED lights. This section includes interpreting system validation diagnostics through front panel LEDs and audible signals. (Page 85)
From the official HP Prodesk 600 G4 Small Form Factor PC manual, page 85
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