HP COMPAQ DC5750 Service & Reference Manual page 164

POST Error Messages
POST Diagnostic Front Panel LEDs and Audible Codes (Continued)
Activity
Red Power LED
flashes six times,
once every
second, followed
by a two second
pause. Beeps stop
after fifth iteration
but LEDs continue
until problem is
solved.
Red Power LED
flashes seven
times, once every
second, followed
by a two second
pause. Beeps stop
after fifth iteration
but LEDs continue
until problem is
solved.
Red Power LED
flashes eight times,
once every
second, followed
by a two second
pause. Beeps stop
after fifth iteration
but LEDs continue
until problem is
solved.
C–10
Beeps Possible Cause
6 Pre-video
graphics error.
7 System board
failure (ROM
detected failure
prior to video).
8 Invalid ROM
based on bad
checksum.
437963-001
Recommended Action
For systems with a graphics card:
1. Reseat the graphics card.
2. Replace the graphics card.
3. Replace the system board.
For systems with integrated graphics,
replace the system board.
Replace the system board.
1. Reflash the ROM with the latest BIOS
image. See the "Boot Block
Emergency Recovery Mode" section of
the Desktop Management Guide on
the Documentation and Diagnostics
CD.
2. Replace the system board.
Service Reference Guide, dc5750