Updated: March 23, 2023
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by Jolene Haston
Tech Expert & Writer
497 resolved issues
Verified Expert in:
Smartphones, Apps, 4G/5G issues, Mac issues

I can not add the 4th monitor to my system

Hello, thank you for using Howly. I’ll be happy to help you out! May I ask your name?

Customer Replay

*****

Nice to meet you, *****!
What troubleshooting have you done so far?

Customer Replay

I'm not an expert so just checking wiring etc

Are you using Windows 10, right?

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Customer Replay

yes

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Got it.
The first thing you need to do is connect the monitor to your HDMI, DVI, or VGA port on the PC.
Have you already done it?

Customer Replay

Ok I'm using a 10 port Sabrent adapter with HDMI to USB Plugable adapters and plugged into the USB port on the back of my Legion
And 3 monitors work great Adding the 4th shuts everything down

I see.
Have you tried to connect your Sabrent adapter to HDMI port on the PC?

Customer Replay

no

Please, try it. Seem like your Sabrent adapter suppose to be connected to an HDMI port, not USB.

Customer Replay

it is designed to be the HDMI to USB connector

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Got it.
Have you already tried connecting your 4th monitor to the adapter?

Customer Replay

yes

Then press Windows Key + P on your keyboard. This will bring up a menu with a list of options.
In the example above the second monitor is on the right.

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Customer Replay


way ahead of you

Have you tried to follow the instructions above?

Customer Replay

Several times

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And your monitor still doesn't show up in the list?

Customer Replay

Yes it shows up on the list but when I turn it on it shuts the other 3 off

Most likely, you need to update the driver software of your monitor. Please, connect your 4th monitor, then choose it in the list. In the search box on the taskbar, enter device manager, then select Device Manager. Select a category to see the names of devices, then right-click the one you'd like to update. Select Search automatically for updated driver software. Select Update Driver.

Customer Replay

ok thank you

Is there anything else I can do for you today?

Customer Replay

no

Please feel free to contact us at any time. We'll be happy to help you. Have a nice one!

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