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The two won't communicate

\015 Cannot get my Howard laptop to recognize the the CP-X300 projector. CP-X300 gives message "no input is detected video". I'm running Windows XP on my laptop. I've also tried connecting with a USB cable as well as an RGB cable. Any ideas what I can to do to get the projector & laptop to communicate?\015\012\015\012Thanks,\015\012Eddie\015

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