Troubleshooting Without Diagnostics

 

 

 

 

 

 

Solving Display Problems (Continued)

 

 

 

 

 

 

 

 

 

Problem

Cause

Solution

 

 

 

 

 

 

Blank screen (no video).

Monitor cable plugged

If the computer system has both

 

(continued)

into the wrong

an integrated graphics connector

 

 

connector.

and a graphics expansion card

 

 

 

connector, plug the monitor cable

 

 

 

into the expansion card connector.

 

 

 

✎ If the graphics card is a

 

 

 

 

standard PCI expansion card,

 

 

 

 

you can enable the integrated

 

 

 

 

graphics in Computer Setup. If

 

 

 

 

a PCI-Express graphics card is

 

 

 

 

installed, the integrated

 

 

 

 

graphics can not be enabled.

 

 

 

 

 

 

 

 

Monitor settings in the

1.

Restart the computer and press

 

 

computer are not

 

F8 during startup when you see

 

 

compatible with the

 

“Press F8” in the bottom right

 

 

monitor.

 

corner of the screen.

 

 

 

2.

Using the keyboard arrow keys,

 

 

 

 

select Enable VGA Mode

 

 

 

 

and press Enter.

 

 

 

3.

In Windows Control Panel,

 

 

 

 

double-click the Display icon

 

 

 

 

and select the Settings tab.

 

 

 

4.

Use the sliding control to reset

 

 

 

 

the resolution.

 

 

 

 

 

 

 

Blank screen and the

Pre-video memory error.

1.

Reseat DIMMs. Power on the

 

power LED flashes Red five

 

 

system.

 

times, once every second,

 

2.

Replace DIMMs one at a time to

 

followed by a two second

 

 

 

 

isolate the faulty module.

 

pause, and the computer

 

 

 

 

3.

Replace third-party memory

 

beeps five times. Beeps

 

 

 

 

with HP memory.

 

continue for five iterations

 

 

 

 

4.

Replace the system board.

 

after which the LED flashes

 

 

will continue until the

 

 

 

 

 

problem is resolved.

 

 

 

 

 

 

 

 

 

 

Blank screen and the

Pre-video graphics

For systems with a graphics card:

 

power LED flashes Red six

error.

1.

Reseat the graphics card.

 

times, once every second,

 

 

 

2.

Replace the graphics card.

 

followed by a two second

 

 

 

3.

Replace the system board.

 

pause, and the computer

 

 

beeps six times. Beeps

 

For systems with integrated

 

continue for five iterations

 

graphics, replace the system board.

 

after which the LED flashes

 

 

 

 

will continue until the problem is resolved.

Service Reference Guide, dc7600

390742-002

D–11