"No signal not detected" when using the monitor.

Original title: Second just conked monitor

I have two LG monitors with a desktop Acer running Win7Pro: Monitor1 (M1) = W2253 Monitor 2 (M2) = 23MP65HQ. All of a sudden yesterday stopped M2 display. It is said 'No signal detected' and goes to sleep. In the devices list, it is displayed as generic PnP monitor. When I check the resolution of the screen, it shows M2 in a small gray square, but it is not identifiable or traceable.

It is the monitor or the cable. When I unplug M1, M2 is functioning normally.  So it seems that I can't use the two together no more. Except for a little while after the blackout. I opened a program had been posted on M2 before the failure of current and for a short time while M2 has been reactivated, but with a bad resolution. When I tried to set the resolution, the screen went black again and has stay black since. The display resolution is a constant problem before that. Sometimes he'd lose the setting and I reach the screen resolution and to detect and it would be fixed - just not always. An occasional pain but is not debilitating.

There were no cases leading up to black screen - except a Windows Update. I didn't do any cleaning, moving, or adjustment of any sort, no power bumps or other external event. He became all black while I was doing a regular job. This is my work computer and I'm the only person who uses it.

Help?

Click on the following link and check if it helps.

Update a hardware driver that is not working properly.

http://Windows.Microsoft.com/en-in/Windows/Update-driver-hardware-ISN

Tags: Windows

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