Hello, i have a new-ish (2-3 months old) xg2401. I have those scan lines randomly APPEARING when i go back to my games after alt-tabbing. It happens ~2 times / week. In occasion, it ALSO happenned when launching the game, i didn't even alt-tab. Pictures : http://imgur.com/a/HlU70

Other symptoms :

-Once it happens, i get "scan lines" on every thing, desktop included. Rebooting is the only fix.
-Powering off (with the button), removing the cable (video or power), give a "no signal" when i PLUG it back. I can still open the display menu.
-Screenshots taken are fine and do not SHOW the scan lines.
-The On Screen Display menu is also fine, and do not have those scan lines.

At first, i though i was some kind of stereoscopic 3D thing activating, so i uninstalled nvidia 3d drivers. Still happening. I even cleaned my graphics drivers with DDE, and reinstalled them.

Thanks you !
Go back to the drivers from the card manuf. site...Lastest drivers are installed. CG is a GTX 970 by the way. Didn't had the problem with my previous monitor.You didnt read my post...USE the manuf. drivers...not nVidia.The driver from EVGA and Nvidia is the same version.