AOC Monitor No Signal (Fix Easily)

About The Article:

  • The “No Signal” error on AOC monitors indicates there is no video input detected.
  • The article covers common reasons for the AOC no signal issue like loose cables, incorrect input selection, outdated drivers etc.
  • It provides troubleshooting tips to check cables, connections, inputs, and drivers to fix the problem.
  • Simple step-by-step instructions are given to resolve the AOC monitor no signal error quickly.

Written By – Manvendra Singh Manvendra Singh

It can be frustrating when you set up your new AOC monitor only to be greeted by a black screen.

The “no signal” message means your monitor is not detecting input from your computer.

But don’t worry – with some simple troubleshooting. You can get your display up and running.

Quick Fix:

To fix the “No Signal” issue on an AOC monitor, ensure the video cable is securely connected and select the correct input source using the monitor’s menu buttons. If the problem persists, try testing with another cable or device.

AOC Monitor No Signal (Fix Easily)

Common Causes of AOC Monitor No Signal

There are a few common reasons why your brand-new AOC monitor isn’t receiving a signal:

1. Faulty or Loose Video Cable

The most apparent cause is a faulty or loose video cable connecting your monitor to your PC.

Ensure both ends of the cable are securely plugged into the ports on the back of your computer and monitor.

Try swapping the cable for a different one if possible.

Faulty or Loose Video Cable

2. Incorrect Input Source Selected

Many AOC monitors have multiple input sources like HDMI, DisplayPort, DVI, and VGA.

You may have the wrong input selected as the active source on the monitor menu.

Use the monitor buttons to toggle through the inputs until you see a display.

Incorrect Input Source Selected

3. Graphics Driver Issues

Outdated, corrupt, or missing graphics drivers can prevent your PC from properly sending a signal to your monitor.

Check for graphics driver updates from your computer or GPU manufacturer.

Reinstalling your drivers may help.

4. Incompatible Resolution Setting

Setting a resolution too high for what your monitor supports may not show a display.

Reset or lower your computer’s resolution or reset your monitor to factory default settings.

Incompatible Resolution Setting

5. Computer Power or Display Output Issues

Of course, no signal can also point to more significant PC problems, like your computer not powering on entirely or a failed graphics card not sending a signal.

Check all your computer connections and power cables first.

Try plugging your monitor into another device to test if the issue is with your monitor or computer system.

Steps to Fix an AOC Monitor With No Signal

Follow these steps to troubleshoot an AOC monitor showing no signal:

  1. Check Video Cables: Inspect all video cables to ensure they are fully plugged in at the monitor and computer end. Try different cables if possible.
  2. Toggle Input Source: Use the monitor menu buttons to cycle through available video inputs like HDMI, DisplayPort, DVI, or VGA until you see a display.
  3. Reset the Monitor: Restore your AOC monitor to factory default settings in case incorrect display settings are causing no signal issues. Refer to your monitor manual for steps.
  4. Update Graphics Drivers: Download and install the latest graphics drivers from your computer or GPU manufacturer’s website. Reinstalling can fix corruption issues.
  5. Change PC Resolution: If the resolution is too high, change to a lower resolution like 1280 x 1024 or 1024 x 768 in Windows display settings.
  6. Test Components: Connect your monitor to another computer or game console. And plug another display into your computer. This can help identify if the problem is with the monitor itself or PC components.
  7. Contact Support: If the issue persists after trying the above steps, contact AOC or your place of purchase for assistance with your specific monitor model. You may need a repair or replacement.

Frequently Asked Questions

Here are answers to some common questions about troubleshooting an AOC monitor with no signal:

Ques 1: Why does my AOC monitor say “No Signal” when my PC is on?

Ans: This usually means no video data is received from the connected computer.

Causes include loose cables, incorrect input selected, incompatible resolution, or problems with your graphics card or drivers.

Ques 2: Is my AOC monitor power light on, but the screen black?

Ans: If the power indicator is lit, but you see no picture, the monitor is likely not receiving a video signal.

Try changing out video cables first. Also, ensure your PC input source matches the port used to connect the monitor.

Ques 3: I connected my AOC monitor with HDMI but still got no signal?

Ans: With no signal over HDMI, try changing cables first. Also, ensure your graphics drivers are up-to-date.

Your AOC display may need service if other monitors use the same HDMI port.

Ques 4: How do I reset my AOC monitor to factory default settings?

Ans: Consult your monitor manual for the proper reset procedure.

Usually, there is an option in the monitor on-screen display menu.

Default reset will revert any customized settings that may be causing no signal issues.

Ques 5: Can connecting my AOC monitor with the wrong cable cause no signal?

Ans: The incorrect video input cable can prevent your monitor from detecting a proper signal.

Double-check that you are using the cable matching the connected ports on your display and computer.


Loose or faulty video cables, incorrect input selection, outdated graphics drivers, or incompatible resolution settings likely cause a blank AOC monitor.

Check all connections and cables first, then work through the abovementioned troubleshooting steps.

Reset your monitor to default factory settings as well. In most cases, your display should quickly be up and running.

But if issues persist, contact AOC support for assistance.

With the proper troubleshooting, you can display your AOC monitor properly again.


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Manvendra Singh
Manvendra Singh

Hi, I am John Williams. Editor-in-chief of the website Here I write about PC technology & Guides.