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HP Recommended
HP 21kd 20.7-inch Monitor
macOS 12.0 Monterey

I used to use this monitor with my MacBook Air, now I switched to MacBook Pro 14in and got a new cable and monitor says Input signal not found. Tried restarting laptop and  monitor and still have problem. Seems like it connects for a second then goes away as I can see the desktop configuration screen in MacBook setting for a split second. Im using a VGA-HDMI cable. 

2 REPLIES 2
HP Recommended

Get bi-directional DVI to HDMI adapter like this and use a quality hdmi cable

https://www.amazon.com/CableCreation-Adapter-Bi-Directional-Converter-Projector/dp/B08DJ3CMS8

 

 


I am a retired Principal Analyst, and a community volunteer.
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HP Recommended

Unplug the cable running from your monitor to your PC and plug it back in, making sure the connection is firm. The most common cause of this error is a loose cable.

Reattach the cable running from your monitor to your PC. If the monitor is still not displaying a signal after firmly reattaching the cable, the problem could lie with the cable, especially if the cable has visible damage.

Replace your monitor with another monitor if possible. If the "No Input Signal" error still appears, the problem does not rest with the cables or the monitor, but with your PC.

 

 



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