U2412M does not work with DVI

Previously worked perfectly with the following:

Computer (Windows 7) supplied with monitor connected to monitor with original DVI cable

Laptop Dell Inspiron 5547 (Windows 8.1) with a HDMI output connected to monitor via an HDMI to DVI I bought from Dell.

Two computers worked with the VGA cable supplied with the monitor.  Now the VGA is intermittent.  I tested the cable with another computer and there is no problem.

NOTE: I've never had the monitor connected to 2 computers, while they were on or while the monitor is turned on.

Now, the monitor doesn't not with DVI - video display. The laptop cannot detect the monitor under control panel > display > screen resolution. It only detects the built-in monitor.  I can't check this on the desktop because there is no video display.

I also bought a display port > HDMI adapter but read messages explaining the need for a converter, so I'll ignore for now it does not work with DP since I may have the wrong card.

I followed the instructions to reset and diagnostics to the screen, which makes no difference. The problem is not at all, not only a bad display.

Is still of Dell do not repair out of warranty monitors? I bought the monitor directly from Dell and I find it rather hard to believe that there is no way to repair $ 300 monitor that is only 3 years old.

Any suggestions would be welcome. Or am I out of luck, and to buy a new monitor?

You run properly bid. He says on page 31, 'you can run diagnostics integrated only when the video cable is unplugged and that the monitor is in self-test mode'

So no DVI or VGA connected monitor.

Tags: Dell Peripherals

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