So, finally got a top endish video card. I normally cap my spending at 180-250, but figured I could really use a good card since I've been running 3 monitors for a while, and it basically makes all the games I play (Arma 2/3 and DayZ) unplayably slow FPS... SO, got a EVGA 970 FTW. Thanks to Bohemia Interactive, I'm still getting pretty crappy FPS, but it's WAY MORE playable, and GORGEOUS.

RIG:
Gigabyte GA-Z77X-D3H mobo
i5 3570k (stock clock)
Thermaltake Water 2.0
8GB Corsair Vengence DDR3 1600
2 Samsung 870 128gb SSD
2 WD  1.5tb Raid0 7200 RPM Drives
2 Acer S231hl 23" screens (dvi/dvi)
1 Acer H243H 23" screen (hdmi)

So, no problems gaming really, a BIT of screen tearing on the center monitor in games, but nothing horrible... However, in Windows, I get fairly frequent jaggy lines, I've also noticed entire portions of clouds not loading in Arma 3 in very clear cut shapes.

Here's a quick video of the jagged lines in windows, it's not SUPER obvious, but again, I held my cell phone on it randomly for 2 min and edited down the videos a bit.

It won't let me link the video

you tube . com/watch?v=4dn4bC1OCPI&feature=youtube_gdata

Here's a screenshot of the clouds in A3:
 

 
I can take another video is it's not clear.. it's definitely happening a lot.

I'll try switching off the slideshow.

I hadn't noticed it coinciding before.

Drivers are all up to date, and I uninstalled the ATI stuff from the previous card, and even cleaned the registry.

Hopefully that does it.

Otherwise the card is AMAZING, even at lowish FPS in Arma/DayZ it's so much more playable than it was before. 

Thanks for the suggestion.

Did you find a fix for this? It's also happening to a friend of mine and i cant figure out why

Does changing the resolution/refresh rate help remove the line?

No options to change the refresh rate? That's odd. There are two ways to change the refresh rate...
 
#1 Right click on the desktop and select "screen resolution", select "advanced settings", select the "monitor" tab, select and change the refresh rate.
 
#2 Right click on the desktop and open the nvidia control panel, under the display category select "change resolution", select and change the refresh rate. 

You may have a faulty display cable. Have you tried replacing the display cable on that one monitor?

Brand new in bag HDMI cable still the same stuff.

Ugh... RMA?

I just found out EVGA only allows 14 days to register for the level up program or w'ever, so now I'd have to buy a Extended Warranty to be eligible for that...

I've been noticing it happening in games now too.

This happened to me with my last nvidia card too.. I swore off high dollar cards since then (GT8800)

Could it be something as dumb as the overclock isn't liking my memory? or Power  Supply problems?

Any ideas would be great, I really don't want to deal with RMA'ing a card, or buying an extended warranty.

It seems to be worse with this cable? The scan line goes all the way across anything windowed in the center monitor, and it's happening pretty frequently now.. 

I'll try swapping around cables on the monitors and see if that effects anything.

The far right monitor is the "default" though, thats the only one that displays anything until windows starts, and that one doesn't do it at all.

NonovUrbizniz
Wow, I think this latest driver update fixed it??

Haven't seen it happen all night since I updated, and launched/closed a game, played video in a bunch of windows, and alt tabbed all over... scrolling etc.

Woo hoo! I hope lol.

Good deal.