Input not supported, but the resolution and refresh are correct...

So, I bought a 1080p DP to DisplayPort adapter so that I could use my Acer monitor on my 2070 super. When I first plugged it in, it worked fine, but the resolution looked weird compared to my other monitors so I changed it and it worked fine until i booted up my PC today. Two monitors work fine, but the new one has a black screen, with a floating blue box that says "input not supported"
After doing some research, I found out that changing the resolution is what caused the problem.
Ive tried changing the resolution back, and Ive tried changing the refresh rate, none of which worked.
I even went into my Geforce settings to try and fix it there, to no avail.
I also tried booting into safe mode, but then it only detects my main monitor
Im at a loss. I have no idea how to fix this, and I could really use my 3rd monitor...
Any help would be greatly appreciated!!
Winver: 20H2 (OS Build 19042.804)

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JacksDeformity said:

So, I bought a 1080p DP to DisplayPort adapter so that I could use my Acer monitor on my 2070 super. When I first plugged it in, it worked fine, but the resolution looked weird compared to my other monitors so I changed it and it worked fine until i booted up my PC today. Two monitors work fine, but the new one has a black screen, with a floating blue box that says "input not supported"
After doing some research, I found out that changing the resolution is what caused the problem.
Ive tried changing the resolution back, and Ive tried changing the refresh rate, none of which worked.
I even went into my Geforce settings to try and fix it there, to no avail.
I also tried booting into safe mode, but then it only detects my main monitor
Im at a loss. I have no idea how to fix this, and I could really use my 3rd monitor...
Any help would be greatly appreciated!!
Winver: 20H2 (OS Build 19042.804)

Its actually a Dodocool 1080p DP DisplayPort Male to VGA Female Converter Adapter Cable

Heres the settings

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Ghot said:

@JacksDeformity


I would temporarily unhook all the other monitors. Then go into the On Screen controls for the monitor that's having the problem. There should be a way to reset the display to defaults.

Also, what is the model number of the video card?

When I unhook the other monitors, I have no screen to work with. Also, the on screen settings buttons dont do anything currently. I have a 2070 super, not sure how to find the model number

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Ghot said:

@JacksDeformity


I would temporarily unhook all the other monitors. Then go into the On Screen controls for the monitor that's having the problem. There should be a way to reset the display to defaults.

Also, what is the model number of the video card?

When I unhook the other monitors, I have no screen to work with. Also, the on screen settings buttons dont do anything currently. I have a 2070 super, not sure how to find the model number

Ghot said:

When you unhook the other monitors... you can use the ACER's OSD to adjust the resolution back to the defaults.

The OSD doesn't use the vid card at all. It's built into the monitor.
You can turn the computer OFF, and still use the ACER's OSD.





/edit

The other way to do it... is hook up all the monitors, then open Nvidia Control Panel (by right clicking the desktop).
Then...on a monitor that does work, in Nvidia control panel, you can set the resolution for the monitor that is not working.
Make sure ALL the monitors have a check mark in their box, then click apply...




Then choose: Change Resolution...
W/e monitor you click on at the top, will be able to have it's settings adjusted below...










In other words...you can use Nvidia Control Panel on a working monitor, to set the resolution on a non-working monitor.


Choose the (native resolution) for the one that doesn't work. It's usually best to always run the native resolution on each of your monitors.

The OSD for the problem monitor wont work, unless I use the other monitor's white video cable, I reset the options. Nothing changed.
Also, in the Nvidia control panel, all monitors are set to their native resolution.
I think its important to note that the problem monitor now says its native is 1920x1080, but yesterday, i swear it said 1600x900

Ghot said:

According to it's specs... it is 1600 x 900. I would just set it to that.
That error message you are getting is saying: the resolution is incorrect.

Or... it's saying that you forgot to change the monitor input when you used the adapter.
If you're using the monitor's VGA input, then you have to set the monitor input to VGA, via the OSD.

According to your monitor's specs... it has a DVI and a VGA input. W/e connector you are using, you need to set the monitor to match.

The main monitor is running off displayport
The second, working, monitor is running off of the white cable with an adapter
The third, not working, monitor is running off the blue cable with an adapter

I set the third monitor to 1600x900 through windows options (because nvidia didnt list 16x9) and its still not working

Whenever I press the OSD button on the third monitor, it cycles the inputs (dvi and vga) and then goes right back to the "input not supported" screen.

I had taken the second monitors video cable and plugged it into the third monitor and it worked fine
Taking the 3rd monitors video cable and switching it to the second working monitor, and produced the same error.

Ghot said:

Then you have a bad cable or bad adapter.

I hope thats not the case, the cable and adapter worked fine yesterday, even after I changed the resolution. It was only until I booted up today that I had the issue...