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.

 

 

 

Blurry video or requested resolution cannot be set.

 

 

 

 

Cause

Solution

 

 

 

If the graphics controller was upgraded, the correct graphics

1.

Check the supported monitor resolution.

drivers may not be loaded.

2.

Install the video drivers included in the upgrade kit.

 

 

3.

Before hardware replacement, try to isolate further to

 

 

make sure issue is not software related.

 

 

Graphics card is bad.

Replace the graphics card.

 

 

 

“Out of Range” displays on screen.

 

 

 

 

Cause

Solution

Video resolution and refresh rate are set higher than what the monitor supports.

Restart the computer and enter Safe Mode. Change the settings to a supported setting then restart the computer so that the new settings take effect.

Fuzzy focus; streaking, ghosting, or shadowing effects; horizontal scrolling lines; faint vertical bars; or unable to center the picture on the screen (flat panel monitors using an analog VGA input connection only).

Cause

Solution

 

 

 

Graphics card is not seated properly or is bad.

1.

Reseat the graphics card.

 

2.

Replace the graphics card.

 

 

 

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HP 8300E B8U11UT#ABA manual Solving display problems, Out of Range displays on screen Cause Solution