Chosen Solution
I got an adapter for the projector to hook to the computer, I tried both a USB and a HDMI adapter but still can’t get the computer screen to show on the projector screen. Wondering if the projector is just too old.
This projector looks like it has only a VGA input which will require that you have an adapter that converts the signal from HDMI to VGA. I have used this technique many times for other projectors without fail. You must split the audio from the HDMI if you need to send that elsewhere as well.
It will work, but a HDMI to VGA adapter is required. In addition, you will not be able to use it for HDCP content like Netflix, but as a daily use projector not having HDCP isn’t the end of the world if you’re aware of the limitations. Not having HDCP just means one less thing to go wrong for content that doesn’t require it :-). I’ve got an HDCP projector for those times, but I usually use the 1210s because it lacks it. This adapter is what I use on my Dell 1210s - similar problem to yours; no HDMI. From the inside it just looks like another private label Optoma like my Dell 1210s. I could tell by the lamp and control board. These can be quite picky compared to the rebranded Epsons.
