I have a Asus VK24 monitor(the one with the integrated webcam) and I have a weird fault.
The following symptoms are consistent with 2 different computers trying all 3 video interfaces(vga, dvi-d & hdmi) also with 2 different mains leads and wall sockets.
The monitor has a blue led when it's on and is receiving a video signal, orange when not.
And now the symptoms:
When I turn the monitor on the picture shows up for about .8 of a second and then the screen goes black but the blue led stays on. If I unplug the video cable and then plug it in again the video shows up again for .8 of a second and then black screen, again the blue led stays on. Also if I have the monitor on it's own and try to access the on screen menus I encounter the same problem, turn monitor on, screen for .8 of a second, then black with blue led still on.
It's out of a guarantee so posting in case there is any possible fix, thanks