Hi. Try this on for size.
2nd monitor shows it gets power. When computer boots up, the green power light goes out on the second monitor and the monitor stays black. Turn off the PC, and then the green light for power comes back on, on the second monitor. Primary is fine. Primary is DVI, secondary is the analog, of course.
In Settings, 2nd monitors still is there, extend my sesktop is still checked...
I dunno, it worked fine last night.... The wierd thing is the power light going out when the computer is on, then it comes back on when the computer is off.
Also, the UPS the monitor was plugged into took a dump; the battery backup side of it no longer works. But now everything fromt hat dead unit is plugged inot a strip temporarily. The wonky monitor, I plugged in the strip at first, then tried directly into a wall socket. That's where it is for now, and still not working.
Ideas? What am I missing? I'm so used to two now; this is such a PITA

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Thanks in advance for suggestions.