Using both video outputs

I am using both video outputs on the back of the mini, VGA and HDMI. Thes VGA is running to a projector and the HDMI is running to a computer monitor. I am also running Bootcamp WINDOWS 7. When I power up the Mac, the computer monitor goes to sleep and defaults to the projector as the main monitor. If I power on the projector first, before powering the computer on and then power the MAC on, it recongnizes the computer monitor as the default monitor. Why can't the MAC mini recognize the computer monitor(HDMI) as the default when both video outputs are connected? HELP!

Try putting the setup in Extended Desktop Mode (Mirroring off) and make the Monitor the main or primary display as shown in the following article's
Aperture 3 User Manual: Configuring Mac OS X for Multiple Displays
Set the Primary Display on a Dual-Screen Mac Setup

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