HP Compaq 6005 Pro Business PC Maintenance & Service Manual page 223

Table D-5 Solving Display Problems (continued)
Cannot enable integrated graphics after installing a PCI Express graphics card.
Cause
On systems with Intel integrated graphics, the integrated
graphics cannot be enabled after installing a PCI Express x16.
On systems with AMD integrated graphics, the integrated
graphics can be enabled in Computer Setup only if an AMD
PCI Express x16 graphics card is installed.
Blank screen and the power LED flashes Red five times, once every second, followed by a two second pause, and the
computer beeps five times. (Beeps stop after fifth iteration but LEDs continue flashing.)
Cause
Pre-video memory error.
Blank screen and the power LED flashes Red six times, once every second, followed by a two second pause, and the
computer beeps six times. (Beeps stop after fifth iteration but LEDs continue flashing.)
Cause
Pre-video graphics error.
Blank screen and the power LED flashes Red seven times, once every second, followed by a two second pause, and
the computer beeps seven times. (Beeps stop after fifth iteration but LEDs continue flashing.)
Cause
System board failure (ROM detected failure prior to video).
Monitor does not function properly when used with energy saver features.
Cause
Monitor without energy saver capabilities is being used with
energy saver features enabled.
Solution
The integrated graphics can be enabled in Computer Setup if
a PCI or PCI Express x1 graphics card is installed, but it cannot
be enabled if there is a graphics card in the PCI Express x16
slot.
On systems with AMD integrated graphics, install an AMD PCI
Express x16 graphics card and enable the integrated graphics
in Computer Setup.
Solution
1. Reseat DIMMs. Power on the system.
2. Replace DIMMs one at a time to isolate the faulty module.
3. Replace third-party memory with HP memory.
4. Replace the system board.
Solution
For systems with a graphics card:
1. Reseat the graphics card. Power on the system.
2. Replace the graphics card.
3. Replace the system board.
For systems with integrated graphics, replace the system
board.
Solution
Replace the system board.
Solution
Disable monitor energy saver feature.
Solving Display Problems 211