DVI problem, is it my card?

I hooked up my new Sharp XV-Z200 to one pc (r8500), on dvi 1024x576, works fine, then i hooked up to my htpc (r9500), also dvi same res, and it seems it only shows blue and yellow, a little brown, but no red or green. The problem is there already on the bios/startup vga screen. Picture is fine and readable except for that. Could it be a faulty card? The card works fine in VGA, and it worked fine through dvi for my old AE300.