PC screen disscoloured and fuzzy please help

doug666 · 16 Dec 2011 at 20:04

hello i have just bout a new pc it will work fine useing the hdmi cable but when i use the dvi the colour gos all funny and wired like is a bit fuzzy as well iv tryed the dvi cable in all 4 ports ( im useing 2 grafix cards) and the botem card i tryed it in both i just get black screen with cursor and top card fuzzy with colour all mucked up the monitor i am useing is a LG W2363D please please help

Loke · 16 Dec 2011 at 20:17

Try a different DVI cable?

doug666 · 16 Dec 2011 at 21:57

ok now i have changed the screen resulotion from the top one to the bottem witch is 800x600 it now looks fine but why cant i use max resilotion please help some one ?

RJC · 16 Dec 2011 at 22:05

Hello and welcome to the forum

Please list the full specs of the pc being used.

Daichin · 16 Dec 2011 at 22:06

Is that a 120hz monitor?
You need a Dual Link DVI cable, I think. Make sure the DVI cable you have is Dual Link. If it isn't, I believe it can cause some issues with 120hz monitors, specifically fuzziness.

Edit: You should be able to tell if it is Dual Link by seeing if the plug has the full compliment of pins.

Orcvader · 16 Dec 2011 at 22:29

Are you using the DVI cable that came with the monitor? Have you tried a different DVI cable yet? And since you have two graphic cards, the bottom one's output display will be disabled as you're running in SLi/Crossfire mode. This is normal.

Please tell us your full system specs, that way we can help you.

doug666 · 16 Dec 2011 at 22:52

hi my pc is
windows 7
intel(R) core(TM) i7-2700k CPU @3.50GHz
16 gig ram
mother bord is maximus iv extreme-z
grafix card is 2 msi twin frozR NIVEDA GeForce GTX 580

doug666 · 16 Dec 2011 at 22:55

the dvi cable i am useing was brout brand new the one that came with moniter was missing due to 2nd hand
the cabel pin looks like this
_.... ....
.... ....
some thing like that its dvi d and moniter is 120 hz

doug666 · 16 Dec 2011 at 22:59

the dvi cabel i have brout is pure connectivity
featers are
dvi-d connection cable
single link
high qulity shilded cable for pin sharp images

Orcvader · 17 Dec 2011 at 00:01

It's single link. Your monitor is 3D, you need a dual link cable. Buy a dual link DVI cable and see if it can display the full 1920x1080 resolution @ 120hz.

doug666 · 19 Dec 2011 at 12:23

i got a duel link douse not work still same fuzzy problem

Orcvader · 19 Dec 2011 at 12:38

Try setting the refresh rate to 60hz and see what it looks like?

doug666 · 19 Dec 2011 at 12:49

i can see if i have the resilotion set to 800x600 and 60hz but if i got to the native resilotion at any hz it goes all disscoloured as if the cabel is half hanging out witch it ant and the nativ resilotion is 1920x1080

Daichin · 19 Dec 2011 at 12:51

And it works fine over HDMI?
Maybe there could be a problem with the DVI output on the monitor?

doug666 · 19 Dec 2011 at 12:55

but why would it work fine at 800x600 and not at 1920x1080 ?

Orcvader · 19 Dec 2011 at 13:09

doug666 said:
but why would it work fine at 800x600 and not at 1920x1080 ?

Because 800x600 does not need as much bandwidth as 1920x1080. I would try another monitor with the same cable, either it's a faulty DVI port on the card, faulty DVI port on the TV, or faulty cable.