No Signal to a monitor is common, and you need not worry initially before doing some basic troubleshooting.
Your Monitor may remain blank even if you start your computer. The Monitor can show “no signal” during boot, and the CPU turns on without the Monitor.
All these may happen to you, and these are commonly seen.
I have listed down a checklist that covers the initial troubleshooting that is very easy to perform and lets your Monitor get rid of the No signal error.
Troubleshooting No Signal to Monitor
Here are the proper troubleshooting steps:
Check the Power
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.
Checking CPU connectivity
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.
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.
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.
In most cases, this will solve the issues.
What to do if now also you get No Signal to Monitor?
Next, you can do the following:
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.
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.
Factory Reset Settings
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.
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.
I would not recommend you open the cabinet or perform any further tests as they require skilled technician assistance.
I hope this post helped you in resolving the no signal issue in your Monitor.