HP EliteDesk 705 G2 Maintenance and Service Guide - Page 96

Red seven times, once every second, followed by a two second pause, and the computer

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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 (if applicable). Power on the system. 2. Replace the graphics card (if applicable). 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 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 (if applicable) or video connector and the monitor. Blurry video or requested resolution cannot be set. Cause If the graphics controller was upgraded, the correct graphics drivers may not be loaded. Monitor is not capable of displaying requested resolution. Graphics card is bad. Solution Install the video drivers included in the upgrade kit. Change requested resolution. Replace the graphics card. 86 Chapter 6 Troubleshooting without diagnostics

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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 (if applicable). Power on the
system.
2.
Replace the graphics card (if applicable).
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 (if applicable) or video connector and the monitor.
Blurry video or requested resolution cannot be set.
Cause
Solution
If the graphics controller was upgraded, the correct graphics
drivers may not be loaded.
Install the video drivers included in the upgrade kit.
Monitor is not capable of displaying requested resolution.
Change requested resolution.
Graphics card is bad.
Replace the graphics card.
86
Chapter 6
Troubleshooting without diagnostics