Table 10-6Solving Display Problems (continued)

Blank screen (no video).

Cause

Solution

 

 

Monitor settings in the computer are not compatible with the

1. In Windows XP Control Panel, double-click the Display

monitor.

icon and select the Settings tab.

 

In Windows 7 Control Panel, under Appearance and

 

Personalization, select Adjust screen resolution.

 

2. Use the sliding control to reset the resolution.

 

 

Monitor is configured to use an input that is not active.

Use the monitor's on-screen menu controls to select the

 

input that is being driven by the system. Refer to the

 

monitor's user documentation for more information on the on-

 

screen controls and settings.

 

 

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.

Replace DIMMs one at a time to isolate the faulty

 

 

module.

 

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.

 

 

266 Chapter 10 Troubleshooting Without Diagnostics