Showing results for 
Search instead for 
Did you mean: 
New member
1 0 0 0
Message 1 of 1
Flag Post

No video on HP s270n from MB Air: Input Signal Not Found. Check the video cable and video source.

HP Recommended
HP s270n
macOS 11.0 Big Sur

I had an HP s270n monitor that I really liked, but I had to return it when I left my job.

So I bought another one for myself: same make and model.


However, the new monitor won't work with my same computer: a MacBook Air.

I'm connecting my MacBook Air to the HP s270n monitor using a USB-C cable.

The error message on the monitor reads "Input Signal Not Found" . "Check the video cable and video source."


The monitor works with my MacBook Pro when connected using an HDMI cable.

The monitor does not work with 2 different laptops connected using a USB-C cable.

I also tried 2 different USB-C cables; neither works.


It says USB-C Video Connected on the monitor.


Any suggestions?

Warning Be alert for scammers posting fake support phone numbers and/or email addresses on the community. If you think you have received a fake HP Support message, please report it to us by clicking on "Flag Post".
† The opinions expressed above are the personal opinions of the authors, not of HP. By using this site, you accept the Terms of Use and Rules of Participation