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Monitor stopped working on one computer


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#1 mwrmw9

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Posted 10 January 2015 - 07:59 PM

I have two Win 7 computers, one a desktop and one a notebook. I had the monitor connected to the desktop and all was well until this morning when I left the computer long enough that it turned off the monitor (that's how I have it set). But the monitor wouldn't turn back on; the yellow no-signal light stayed on instead of turning to green. I turned the computer off then on but that didn't fix it. Here are the trouble shooting results:

- The monitor (and cable) works on the notebook.

- The desktop drives another monitor (in the shop where I bought the computer) just fine, using the same connector in the desktop.

- I replaced the monitor cable with another one. The monitor still gets no signal from the desktop, and also works fine on the notebook.

I'm running out of ideas...



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#2 mjd420nova

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Posted 10 January 2015 - 09:17 PM

The desktop has a setting that is not allowing it to display properly.  Try disabling all the power save options in the BIOS.



#3 mwrmw9

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Posted 10 January 2015 - 09:22 PM

The desktop has a setting that is not allowing it to display properly.  Try disabling all the power save options in the BIOS.

1. I can't do that because I can't see anything on the monitor with the desktop.

 

2. It worked find one minute, then stopped..

 

3. The disktop displays fine on another (tried one) monitor.



#4 mwrmw9

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Posted 12 January 2015 - 10:35 PM

This morning I took the computer and monitor and cable to the shop where I bought the computer (not the monitor; I had that) a month ago. The tech that built the computer tested it and found the same behavior. He then noticed that my monitor cable was connected to the computer via an adapter, and suggested switching cable types to one that didn't requjire an adapter and plugged into a different connector on the computer. He did that and low and behold it worked. Why did it work for a month with the original cable and then stop workiong? He said he woulod have liked to have figured that out but he didn't. Who knows... Anyway, it's all back working.






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