I keep having the oddest phenomena.
It started two nights ago when I was playing Diablo 3. I was playing along and the screen just went black. The computer was still on. The monitor was still on, but the screen was black. I believe I could still hear game sounds. It was late, and I should have stopped 30 minutes earlier, so I wrote it off as a glitch, turned off the comp and went to bed.
Today, I tried to turn it on for the first time since (been crazy busy). The windows loading screen showed briefly then it went black again.
I have dual video cards in SLI, so I tried unplugging the primary card and using the secondary card, thinking maybe there was something wrong with one of the cards. I got a similar flash of screen then black. The monitor wasn't in stand-by mode, so it was getting signal.
Here's the weirder part (I think). Since my GPU has two DVI ports, I tried plugging into the second port. Unplug, monitor goes to stand-by. Plug in to 2nd port, see things on screen. YAY! Black again, still not in stand-by. Every time I unplug and replug, I get 1-5 seconds of seeing the screen before it goes black again. However, it isn't going into stand-by which makes me think the issue isn't a lack of signal to the monitor.
The behavior is the same with 2, 1, and 0 video cards (I tried plugging directly into my motherboard).
I don't think it's a windows issue because some of the time I don't even see the bios loading screens.
Any help would be GREATLY appreciated.