Windows 10: Second monitor suddenly stopped working

I booted up my computer this morning and the second monitor just showed up as a black screen. It's been working perfectly the past few months, and I have no idea what caused this issue as I didn't change or update anything on my computer. How do I fix this?

:)

 

My second monitor stopped working

My second monitor stopped working tonight. When I reboot the PC both monitors work, I see the start up screens on both but when Windows gets to the log in screen, the second monitor turns off. I have verified both DVi cables are working as I can switch
them back and forth and both monitors work with the main cable. I have looked at the Device Settings and the second monitor doesn't show up nor can it be detected after boot up. Its been working fine for years and I have done nothing different tp the settings.
It just stopped.

 

I accidentally hit the update button instead of postpone and now my second monitor does not work.

Hello,

I suggest you to unplug the cable from the monitor and connect to the second monitor, and check if it works.

Also, suggest you to follow the below steps, and check if it helps.
1. Press Windows + X, and select Device manager.
2. Check if the second monitor is listed under Monitor.

Also, recommend you to refer below link answered by

KelvinNikkel , and check if it helps in resolving the issue.
Why Does My Second Monitor Not Work With The Windows 10 Update?

Do let us know with the update of the issue.

Thank you.

 

Dual Monitors Suddenly Stopped Working

Hi,

For better assistance, please provide the following information:

• Were there any changes made to your computer prior to this issue?
• Have you tried using a different monitor on the same computer?
• Have you tried using the same monitor on different computer?

We're looking forward to your reply.