I have dual HDMI out slots on my upgraded video card. What do I do if I can see the pointer on my monitors, but I can't control it? Select a display option. My computer does not detect my second monitor even after connecting a VGA splitter.
Uncheck the "Mirror Displays" box.
Show only on 1 — Shows content only on the first monitor.
If your monitor isn't plugged into anti anal sex power source, attach it via the included power cable; you can then press the Power button on the monitor to turn it on.
Things to check before the start How to set up to connect two monitors Bonus Tip:
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If you want to extend your desktop using the second monitor, make sure that the "Mirror Displays" checkbox is unchecked.
This can be caused by the improper connection, defective monitor or cables.
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It's a screen-shaped icon in the System Preferences window.
If you have a laptop which has at least one video output slot e.
On the back of your computer's CPU box or monitor if you're using an iMacyou should see several ports, one of which is currently being used for your main monitor.
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Tips It's often cheaper to buy cables online than in stores.
What is the cheapest graphic card good for gaming using dual monitor?