Hi, I'm Nathan.
Sorry to hear that you're having trouble with this but I'll do my best to help you.
Can you recheck that insignia model for me?
Thank you for clarifying.
That is a fairly basic model projector, so the pri***** *****mitation here is its resolution; you'll need to go into the laptop display settings menu, enable the 2nd monitor output, and then set the output resolution to 1024x768.
Let me know if that helps.