I didn't explain the problem 'cause I have read so much about it, but maybe you know the solution for my problem. Here we go.
I have two of these monitors. Both of them have the same problem. I got them from a guy who didn't know what to do with them, so I thought I would give it a try.
The screens get recognized by the computer, but it won't show any picture. The panels works just fine, since the searching for device appears and the "can't find anything" message bounces around the screen, which indicates nothings wrong.
I have tried to connect it to both VGA and HDMI, and I have tried to upgrade the firmware, and install the drivers downloaded from samsung. I have done the firmwareupdate on windows XP, Vista, 7, 8.1 and 10. I have also tried to connect the monitors to a Fedora 22 computer.
The firmwareupdatesoftware tells me that the newest firmware is installed and there is no need for update. If the newest firmware is installed, i don't know, but I know that I would love to force a new firmware update. That seems to be a problem.
After all this, I thought of buying new main boards for the monitors. They costs $50 each. So I thought a little bit more investigation would be smart. I found this page, and another page, and another ... that told me something about some EDID. I have search the net for these files with out luck.
I don't have the knowledge to troubleshoot the codes, so I thought that an original EDID would be the safest way.
I think that's about it.