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No signal on second monitor(TV)

So everything was doing fine past 3 years, I had my TV connected to my PC and was good, today i turn on my computer and a message pops on TV saying “No signal”.I click win+p to redirect to my main monitor there is picture…I check the hdmi cable with my laptop (connected laptop and tv) it works, again connect my PC and TV no signal, now it wont even detect the TV..Now i did some steps to resolve it but nothing happens…

Stuff I did:

Updated my grapich drivers from device manager

Uninstalled my graphic card then reinstalled it

Installed the drivers from nvidia official website

In controll panel added a device and there my TV pops up

Removed and attached hdmi cable several times, thought it would restart the connection

Even backed a system restore point to two days ago

Removed my main monitor and had just my TV plugged in

And that did nothing

The last step I did realy brought me some hope because i turned the PC on with only hdmi connection to my TV, and it showed the bios logo, after that windows logo, after it showed the circle loading and right before i would be in front of my lock screen the message arrived “NO SIGNAL”

Help me with this it was doing fine tonight now its coocked I think there is a software problem

Hello Usualcustomer, welcome to the Microsoft Community!

According to your feedback, you are experiencing a sudden lack of signal from your computer to your TV monitor.

Have you changed the display settings, resolution, frame rate, etc.?

I think the fact that you can see the logo means that your cables and TV are intact.

I think you can try a clean boot to rule out your third party software interfering with the problem.

Here's how to do it

1. Tap Windows+R and type msconfig

2. Open System Configuration, select the General tab - Selective Startup.

3. Remove the checkbox of Load startup items.

4. Go to the Services tab - click Hide all microsoft services in the lower left corner, and then click Disable all.

5. Click OK and restart your computer. (Be sure to select Hide all microsoft services first and then click Disable all, otherwise it may lead to unforeseen problems such as not being able to access the system.)

6. Check if the problem will reappear.

DISCLAIMER: Clean Boot is a way to start Windows with a minimal set of drivers and startup programs so that you can determine if background programs are interfering with your games or programs and help you figure out the cause of the problem. It will help you get back on track.

If a clean startup solves your problem, you can try turning the suspected software on in the service to see if the problem occurs, and you can confirm which software is causing the problem!

In addition, you can also try to create a new account to see if the TV can display normally.

1. Search for CMD, then run it in administrator mode and enter the following commands

net user USERNAME PASSWORD /add

2. After the command runs successfully, enter the following command

net localgroup administrators USERNAME /add

Note: USERNAME PASSWORD can be replaced by the account name and password you want, if you don't need the password, you can not fill in the PASSWORD.

We hope you find the above information helpful!

Kirito|Microsoft Community Support Specialist

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Last updated March 27, 2025 Views 101 Applies to: