Faded / Transparent horizontal line

[SirTyson709]

I bought a new monitor & it was a lot more noticable. 1080p monitor. I then changed the GPU & I can barely notice the lines & they don't move anymore. Seem to notice them only on steam overlay mode while in game & in really colorful games but I have to really look for them. I can barely see them.

NOTE: My old card is a pretty worn on gold teeth so it could be why I can still see lines barely.

UPDATE: Does this actually work?
Published on Nov 23, 2012
UPDATE 2: https://www.youtube....BY_w&index=1...
You can just use a separate power outlet/socket for the monitor and PSU/computer and it should fix the issue. Thanks to Kömür Gözlüm for the info!

UPDATE: I fixed the scan lines, it was just a problem with using D-SUB/VGA connection. I switched to a DVI monitor and its fine now. And the black screen/freezing problem was being caused by the graphics card after all, even though i tried out quite a few different ones.

OLD:
I had this problem for several months now and i also believe it is related to my PC freezing in games, like in this video http://www.youtube.com/watch?v=Fzg6b8... , since both problems started at around the same time.
I have tried numerous fixes for both, i tried a different monitor, i changed every piece of hardware (ncluding cables and both nVidia and AMD cards) and nothing helped.
I did a fresh Windows installation without any drivers and still the same problem.