Mini DVi to VGA :  impossible to display to a video projector

hello !!!
I bought a MINI DVI to VGA adaptor and i as soon as i connect my videoprojector (Sanyo) to my Imac with the mini DVI-VGA adaptor, my Imac screen freezes and nothing appears on the video projector screen.
What can I do ?
Thanks

Not exactly, though you can reset the PMU of an iMac flat panel machine with a PowerPC G4 processor, reset the SMU of a G5 PowerPC-equipped platform, or reset the SMC of one driven by an intel processor.
Any corrupted settings stored which might affect your external video will be dealt with by those processes. Have you attached the adapter alone and seen this same outcome, or does it occur only when a VGA projector is attached to the adapter?

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    Message was edited by: BlakeTron

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