Please Help Monitor issue

[Renzokucant]

hey all, i'm not sure if this is the right place to post this, but you guys always have such great solutions.

I'm using a samsung 40" LED TV for my computer monitor, however, i'm noticing something that i cant seem to fix..

has anyone ever come across pixel lines when they use a tv like this as a monitor? pixel lines being horizontal lines, like thousands of them stacked on top of each other to make the whole picture, its noticable extremely with certain colors like blue's and oranges, and in my web browser... is this because i'm connected to a pc?

i'm using a DVI to HDMI cord to connect my pc..
HD Radeon 4850
AMD Phenom II black edition 3.2ghz.

the tv has a 120 hz refresh, and comp is puttin out 60 hz im sure.. anyone know how to fix this?

 

[Renzokucant]

bump

 

[johnwillyums]

What's the native resolution of your tv/monitor? It sounds like some kind of signal interference. Have you tried different forms of connection?

 

[Renzokucant]

its 120hz, however, im connecting through my pc which i believe is only outputting 60hz right?, ive tried vga cable and didnt notice it if im correct, but im using dvi to hdmi right now. the display settings say its on 60 hz, but when i go to the catalyst control center, i think its set to 75 hz, i dont see an option for 60...

 

[Renzokucant]

yea catalyst says maximum reported refresh rate is 75, which isnt true cause the tv is 120hz,, but i know you cant get more than 60 out of anything you put into it, and the tv does the rest to upscale..