x23LED red flickering dots/artifacts [ Edited ]

[max25591]

I recently bought a display model x23LED, which i tried in store using a HDMI to DVI cable in store on one of their pcs seemed fine. I got it home, and realised my pc did not hdmi output, so i bought a dvi-d to dvi-d cable and  hooked it up. With low resolution (1280x1024) there is little effect of the red flickering dots/artifacts, which are like red dead pixels that moved around rapidly (suggests of refresh rate not being right). But when using a high resolution (1920x1080), the issue is much greater, with a vastly more amount of red dots/artifacts. I can't identify why with a higher resolution the condition gets worse...

I first thought it would be my graphics card as I have read that red dots appear when gaming on pc and the graphics is getting overheated, but this cannot be the case as it occurs from startup when then graphics is cool. Anyway i did update the drivers on both the graphics card (240GTS) and the monitor (X23LED).

I also read about the refresh rates, of which im sure is partly the colprit, and after trying all the refresh rate (60, 59, 35, 25, 20) none have resolved the issue.

I have yet to replace/try another cable as this COULD be an issue, but wondering if anyone else could help me, or have experienced this before? If all else fails ill just take it back get my money back/get a new monitor.

FYI, i am running Vista. Also when i run at 1280x1024, i get 64 hz horizontal frequency and 60hz vertical, whereas when i run 1920x1080, i get 67hz horizontal frequency and 60 vertical frequency, which leads me to believe the refresh rate is the problem, i just dont know where it is occuring, in the graphic, monitor, software, cable e.t.c?

Thanks in advance fore your help, Max.

[max25591]

Issue resolved, I realised my amateurish error, i was plugging a dvi-d single link instead of a dvi-d dual link between monitor and pc.