This video walks you through troubleshooting steps for no video issues on your Dell PC. It covers checking connections, running an LCD built-in self-test, and performing system diagnostics. You'll also learn how to identify potential hardware failures and resolve display issues.
How to Troubleshoot No Video Issues on Your Dell PC
Follow these steps to troubleshoot no video issues on your Dell PC.
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Check Power Connections:
- For laptops: Make sure the charger is securely connected to both the computer and the power outlet. Also, check the power LED and inspect the adapter and cord for any damage.
- For desktops: Ensure the monitor's power cord is securely connected to both the monitor and the power outlet.
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Check Video Connections:
- Verify that the video cable is properly connected between the monitor and the computer.
- Ensure the monitor's input source matches the connected video cable. If any component seems damaged, replace it.
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Error Codes:
- Once everything is connected properly, turn on the system and check for any error codes. These are signs of possible hardware issues. Make a note of any error code patterns and contact us via our support website.
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Run LCD Built-In Self Test:
- For desktops: Turn off your computer and monitor. Disconnect the video cables from the monitor, but leave the power cable connected. If the monitor cannot sense a video signal, a message will appear on the screen. Reconnect the video cable and turn both devices on.
- For laptops: Turn off the computer and disconnect any external devices. Plug in the charger, ensure the screen is clean, and press and hold the D key while turning on the computer to enter the LCD built-in self-test mode. Hold down the D key until you see solid colors on the screen. Inspect the screen for any abnormalities. If abnormalities are present, contact us via our support website. Press the Escape key to exit the test.
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Use an External Monitor:
- If you're using a laptop, connect it to an external monitor. If the external monitor shows video, then the issue is with your laptop's screen.
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Run SupportAssist Diagnostics:
- Ensure the AC adapter stays plugged in throughout the process. Restart the computer, and at the Dell logo screen, repeatedly tap the F12 key to enter the one-time boot menu. Click on Diagnostics and follow the on-screen instructions. Do not run the extended memory test. If you receive an error or validation code after the test, make a note of it and contact us via our support website.
