False error on HP 23-n012 HDMI IN feature

Basically, I'm going to cut to the chase. Any questions will be answered by me to the fullest. Basically i am having issues using the HDMI IN feature on my HP 23-n012.. the video/audio works fine, yet this error message pops up... keep in mind everything is working PERFECT. (Ps2 to HDMI adapter)..... i just need to get this error away.. is there any terminal command i can enter, or feature i can disable?? This is annoying. Picture/audio is perfect, like i said... here is an attached photo of this message that won't leave. If it was gone, things would be great..

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