Q: I have a MacBook Air that I am trying to connect to a Hitachi CP-x301 LCD projector. I'm using a Mini display port to VGA adapter but the projector will not recognize the input.

Hi Teachingmyself,

Thanks for visiting Apple Support Communities.

If your MacBook Air and projector are not communicating, I recommend the troubleshooting tips found in this article:

Apple computers: Troubleshooting issues with video on internal or external displays

http://support.apple.com/kb/ht1573

Start with these steps:

Confirm display adapters are fully seated in their respective connections and that they are supported models and for the computer and display. Refer to these articles to assist you with adapter compatibility and further configuration information:

• Monitor and Display Adapter Table
• About Mini DisplayPort to HDMI adapters
• Apple Mini DisplayPort adapters: Frequently asked questions (FAQ)
• Thunderbolt ports and displays: Frequently asked questions (FAQ)

Reset the system

You can reset the Mac's parameter RAM and SMC.

Best,

Jeremy