Video problems
The system is running but there is no display.
Probable Cause |
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The monitor is not turned on. | Make sure the monitor is plugged in and turned | ||
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| on. If power is applied to the monitor, the green |
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| power LED should illuminate. |
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The monitor’s data cable is | Make sure the monitor’s data cable is | ||
not connected. |
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| connected to the video controller on the back |
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| of the system. |
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The connector or cable is | Check the connector and cable for bent or | ||
damaged. |
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| damaged pins. |
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The monitor is defective. | Connect a working monitor to the computer. | ||
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The monitor’s brightness and | Adjust the brightness and contrast knobs to the | ||
contrast controls are turned | center position. | ||
down. |
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The video card is not seated | Open the system and reseat the video card. | ||
correctly. |
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The video card is not | Make sure the card is compatible with your | ||
compatible with the system. | system. Try a different video card. | ||
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Important |
| Some systems do not have a video adapter card because | |
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| the video controller is built into the system board, so there | |
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| may not be a video adapter to remove and replace. | |
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The text on the display is dim or difficult to read.
Probable Cause | Solution |
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The monitor’s brightness and | Adjust the brightness and contrast knobs until |
contrast controls are turned | the text becomes clear. |
down. |
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Sunlight is glaring off the | Position the monitor away from the sun or |
display. | window. |
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The CRT may be old. | Replace the monitor. |
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Video problems | 101 |