Boot Error Codes - HP Compaq dc7800 Series Technical Reference Manual

SYSTEM BIOS
✎
Refer to Chapter 3, "Processor/Memory Subsystem" for the SPD format and DIMM data specific
to this system.
The BIOS performs memory detection and configuration with the following steps:
1. Program the buffer strength control registers based on SPD data and the DIMM slots that are
populated.
2. Determine the common CAS latency that can be supported by the DIMMs.
3. Determine the memory size for each DIMM and program the GMCH accordingly.
4. Enable refresh.

8.3.4 Boot Error Codes

The BIOS provides visual and audible indications of a failed system boot by using the system's
power LED and the system board speaker. The error conditions are listed in the following table.
Visual (power LED)
Blinks red 2 times @ 1 Hz
Blinks red 3 times @ 1 Hz
nks red 4 times @ 1 Hz
Bli
Blinks red 5 times @ 1 Hz
Blinks red 6 times @ 1 Hz
Blinks red 7 times @ 1 Hz
Blinks red 8 times @ 1 Hz
Blinks red 9 times @ 1 Hz
Blinks red 10 times @ 1 Hz
8-4
Table 8-1
Boot Error Codes
Audible (speaker) Meaning
None Processor thermal shut down. Check air flow,
fan operation, and CPU heat sink.
None Processor not installed. Install or reseat CPU.
None Power failure (power supply is overloaded).
Check storage devices, expansion cards
and/or system board (CPU power connector
P3).
5 beeps Pre-video memory error. Incompatible or
incorrectly seated DIMM.
6 beeps Pre-video graphics error. On system with
integrated graphics, check/replace system
board. On system with graphics card,
check/replace graphics card.
7 beeps PCA failure. Check/replace system board.
8 beeps Invalid ROM (checksum error). Reflash ROM
using CD or replace system board.
9 beeps System powers on but fails to boot. Check
power supply, CPU, system board.
None Bad option card.
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