How to Fix ‘No signal On monitor‘ issue?-( ͡° ͜ʖ ͡°)

No Signal on a monitor is common, and you need not worry initially before doing some basic troubleshooting. If your computer turns on, but there is no display on the monitor, then this article would be helpful to you.

I have created a complete in-depth guide that would help you fix the No signal On monitor issue, which is very easy to perform.

No signal On monitor

Let’s get started!

How to Fix ‘No signal On monitor‘ issue?

Here are the steps below to fix the issue:

1. Check the Power Supply to Monitor

First, check if the power cable to monitor is plugged properly into the power source. After verifying that, you can press the on/off button present below the Monitor to turn it on if it is switched off.

If the Monitor is switched on, you will at least get a “No Signal” message on the monitor screen.

If this happens, then the Monitor is turning on properly. There is no issue with the power of the Monitor.

2. Checking CPU connectivity

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Once you get sure about the monitor power, then you need to check if the Monitor is connected to the PC properly or not. You would be seeing a wire going from the Monitor to the back of the CPU.

If the wire is connected correctly, then the Monitor should receive a response by the output of your CPU.

3. Checking if Right HDMI Port is selected

On several monitors, you will find there are two HDMI ports. There are two HDMI ports in my LG Ultrawide monitor. 

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Now the two HDMIs do not work in a single instant. You need to switch to the desired HDMI to connect as you do on your TV.

This may happen if you connected to HDMI2 on your computer. Still, you have selected the option for HDMI1 on your Monitor or vice versa. This step might sound simple, but this often happens.

So, once you switch to the right HDMI input from the monitor options, you will only see the proper computer screen.

4. Checking with your Additional Monitor/TV

You can check if the Monitor is working correctly by connecting it to your TV or any spare monitor.

In that case, if the computer screen boots up, then you don’t have an issue with your PC. However, there is some connectivity issue with your Monitor.

5. Checking the Monitor with a laptop

As an additional step, now you can connect another laptop to the Monitor using the HDMI cable you use to connect. You need to check if you get the same problem with that also. 

If you see that also is giving the same problem, it is a problem with your Monitor only.

6. Performing Factory Reset Settings on Monitor

You can factory reset any settings if accessible to your Monitor and reset like-new conditions.

Factory Reset can also resolve the issue.

If you also get the same problem, it is better to register a visit with the computer repair technician.

Can a bad HDMI cable cause no signal?

The “No signal on monitor” is a very common issue with HDMI devices. The HDMI cable sends the video and audio signals to the HDMI-compatible equipment such as TV, Projector, etc. This is a very common issue and occurs when the HDMI cable you are using is of poor quality.

Bad HDMI cables can cause this issue and if you want to fix it, you need to get a new cable or check whether the video card of your computer is defective.

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Can motherboard cause no signal?

Check if the computer is sending the signal to the monitor. Sometimes this problem is caused by the motherboard. If the motherboard is faulty, it can cause no signal on your computer monitor.

In that case, you need to replace it after showing it to the technician. After you repair or replace your motherboard your signal would be restored to your monitor.

Can RAM cause no signal on monitor?

If your RAM has got damaged, then it can cause no signal on the Monitor. If you have dual-channel RAM, you can check by plugging one RAM at a time to detect if your RAM has got damaged.
It is more frequently seen a RAM getting damaged when I see No signal on the Monitor or Monitor restarting often.

Can CPU cause no signal on monitor?

A computer’s CPU is one of the most critical components when it comes to the performance of your system. It is the “brain” of the computer that has the ultimate responsibility for everything that happens inside your computer.

It is rare that your processor gets damaged. A dead processor in a CPU can cause no signal to monitor. However, before confirming the Processor has damaged it is better to check RAM, motherboard, HDMI Cable first.


Let’s conclude the post on How to Fix ‘No signal On monitor‘ issue.

I tried to keep the steps as lucid and straightforward as possible. I shared all the steps I follow whenever I face No signal issue on my Monitor. If you are using a second monitor and if you are facing 2nd Monitor Detected But Not Displaying Issue, here is the fix.

I would not recommend you open the cabinet or perform any further tests as they require skilled technician assistance. 

I hope you enjoyed reading this post.