Windows 10: why wont windows recognize when I have my second monitor turned off?

why wont windows recognize when I have my second monitor turned off?

Hi all.

I find it very frustrating when I have my second monitor turned off but not unplugged from the hdmi port that windows treats everything as tho it is still turned on.

I have been annoyed by this "issue" since at least Vista so I dont think its a windows 10 only thing.

Im I wrong to think that this should be something that the OS should notice?

so in case im not making myself clear this is the issue:

I run a Toshiba laptop as my main computer (tho I have an Asus and an old compaq and they all do the same thing) and I run a nice big Samsung monitor directly above it via HDMI.
My laptop is basically always on as I use it for music and even a clock at night time. I dont run the second monitor unless im actually at the desk actively doing something on the computer.
Very often Ill close all my programs down and unless i drag them to the laptop monitor and close them they will open on the monitor they were last running on....even if that monitor (ie the second monitor) is turned off.

Am I missing something? Surely the OS should recognise that the second monitor is powered off and treat it as tho it was unplugged?

I have googled this several times but there are so many "why wont windows detect my second monitor" threads that I cant find any info on the issue im having.

Maybe im not having an issue....maybe this is normal. If so ill add this to my "reasons why windows sucks" list lol

thanks in advance

Brett

:)

 

Windows 10 Won't Recognize Second Monitor Via HDMI

Hello,

I would suggest you to refer to the suggestions provided by
“Karthik Vengaloor” replied on May 19, 2013 in the Microsoft Community link and check if that helps.

windows 8 will not recognize my second monitor

Note: The above steps holds good for Windows 10 as well.

I hope this information is helpful.

 

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.