Just got this monitor a couple of days ago, and after 6-7 hours I noticed a yellow vertical line running down the left hand side of the screen. I just pressed at the back of the screen and it went away for a while, but then came back eventually. However all of yesterday it did not appear, and now it's coming up again. I pressed on the back of the screen while in BIOS and no lines came up; could this be my graphics card or possibly a faulty DVI cable? I noticed the line changed to pink and blue sometimes when I was pressing at the back of the screen.
Any help would be appreciated, thanks!
Any help would be appreciated, thanks!

