There's a test I use. I boot the machine but let it sit on the BIOS screen as that MUST WORK or there is a monitor or video card failure.
Bob
PS. I don't see enough detail here about model numbers.
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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