How to Check Connections:
Video Connectors and Cables
- Confirm that a power cable is connected to the monitor and a power outlet.
- Monitors do not receive power through the video signal cable, but instead need their own power connection.
- Ensure the video cable is connected to the correct video source.
- Laptop Computers: In Dell laptop computers all the video connectors use the same video card and additional video cards cannot be installed in the computer.
- Desktop Computers: Look at the back of the computer (Figure 1) to check for any installed add-in video cards. Usually, integrated video cards are automatically disabled when an add-in video card is installed. The monitor must be connected to the add-in video card, if present.
- 3. Ensure that the correct type of video cable is connected. Note: Use only one video signal cable to connect the monitor to the computer. Only one connection is necessary and connecting more than one can cause problem.Add-in video cards that use a connector type other than DVI or VGA require a cable adapter, or dongle, to connect to a monitor.
Check the Video Cable
- Examine the video cable connectors for signs of damage (Figure 2).Figure 2: Bent or Broken pins in a VGA Connector.
- Make sure the connector is fully inserted (Figure 3).Figure 3: VGA connector not inserted fully.
- Try a known good video cable with the monitor.
Blank Screen or No Video
- Confirm that your computer is turned on.
- Look for the monitor power LED.
- Press the power Button ON.
- Status of Monitor Power LED:
- No light – The monitor is not receiving power.
- Amber/yellow light – The monitor is not receiving consistent power.
- Green/blue light – The monitor has power.
- Check the power connection to your monitor.
- Unplug the power cord from the back of the monitor and the wall outlet.
- Plug the power cord into the back of the monitor, and then into a working wall outlet.
- Press the Power button on the monitor.
- If your monitor still does not have consistent power, look for another power cord (If available).
- If your monitor still does not have power, contact Dell Technical Support for further assistance.
- Confirm that your video cable is connected to your monitor. For more information, refer to Connecting the Monitor to your Desktop Computer. If a add-in video card is installed in your computer, the standard video port is disabled. Your monitor must be connected to the port on the add-in video card.
- Confirm your video input source. Use the Quick Access or Input button to confirm that your selected video input source works with your monitor’s video card.
- Run the Built-In Diagnostics for your Monitor to verify the functionality of your monitor.