@unknownuser said:
Thanks for the replies.
Can't try different ports, they are different connections (unless I am mistaken). Will take a photo when I get a chance.
I would not discount it overheating either, a month after I got this machine I had to return it for a new cooling system as it died on me. I will give it a good dusting out again, although I did that about 4 weeks ago.
Are you using a DVI and a VGA port? Many DVI monitors come with a VGA adapter or cable, check your box of computer junk.