HP 8000f Maintenance and Service Guide: HP Compaq 8000f Elite Business PC Ultr - Page 117

Solving Display Problems continued, Table E-6

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Table E-6 Solving Display Problems (continued) 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 Solution Pre-video memory error. 1. Reseat DIMMs. Power on the system. 2. Make sure a DIMM is installed in the black DIMM connector first if there is only one DIMM in the system. 3. Replace third-party memory with HP memory. 4. Replace the system board. 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 Solution Pre-video graphics error. 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. 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 Solution System board failure (ROM detected failure prior to video). Replace the system board. Monitor does not function properly when used with energy saver features. Cause Solution Monitor without energy saver capabilities is being used with Disable monitor energy saver feature. energy saver features enabled. Dim characters. Cause The brightness and contrast controls are not set properly. Cables are not properly connected. Solution Adjust the monitor brightness and contrast controls. Check that the graphics cable is securely connected to the graphics card and the monitor. Solving Display Problems 107

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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
Solution
Pre-video memory error.
1.
Reseat DIMMs. Power on the system.
2.
Make sure a DIMM is installed in the black DIMM
connector first if there is only one DIMM in the system.
3.
Replace third-party memory with HP memory.
4.
Replace the system board.
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
Solution
Pre-video graphics error.
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.
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
Solution
System board failure (ROM detected failure prior to video).
Replace the system board.
Monitor does not function properly when used with energy saver features.
Cause
Solution
Monitor without energy saver capabilities is being used with
energy saver features enabled.
Disable monitor energy saver feature.
Dim characters.
Cause
Solution
The brightness and contrast controls are not set properly.
Adjust the monitor brightness and contrast controls.
Cables are not properly connected.
Check that the graphics cable is securely connected to the
graphics card and the monitor.
Table E-6
Solving Display Problems (continued)
Solving Display Problems
107