Macbook connected to Apple M8536 through AVI-DVI adaptor stopped working

have a macbook pro which was hooked to an Apple M8536 23 inch LCD Monitor (the acrylic one) and working fine. I was never able to turn the monitor on or off by its switch under the screen, instead I was just hooking it up live to the dvi port on my macbook pro. All was well until... it wasn't. I connect the cable now as I had before, but no image is displayed. When turning the on/off monitor buttons, it shows that is it on, but does not display an image. Any clues as to how to fix this issue and then, the correct method to connect/disconnect the computer to the monitor?
Thanks in advance.
silvia

Me too How bout an answer

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Resolution
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Macbook connected to Apple M8536 through AVI-DVI adaptor stopped working

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