HP Compaq Business Desktop dc7600 - LED/Beep Codes

Information

HP Compaq Business Desktop dc7600 Diagnostic LED and Beep codes

Details

DIAGNOSIS CODES

Power on - Steady green
Processor thermal protection activated - Blinks red twice
Processor is not installed - Blinks red three times
Power failure (power supply is overloaded) - Blinks red four times
Pre-video memory error - Blinks red and beeps five times
1. Reseat the DIMMs in the memory slots on the system board, and power on the system.
2. Replace the DIMMs one at a time to isolate the faulty module.
3. If the DIMMs are third-party memory, replace them with HP memory.
4. Replace the system board.*

Pre-video graphics error - Blinks red and beeps six times.

For systems with a graphics card:
1. Reseat the graphics card and then power on the system.
2. Replace the graphics card.
3. Replace the system board.*
*For systems with integrated (on-board) graphics, replace the system board.

PCA (system board ) failure ROM detected - Blinks red and beeps seven times
1. Replace the system board.

Invalid ROM based on bad checksum - Blinks red and beeps eight times
1. Reflash the ROM using a ROMPaq diskette.
2. Replace the system board.*

HP Support document