U3415W, HDCP status repeater error message, GTX 770

This is not a Dell monitor hardware issue. Our monitors do not have repeater hardware in them. The fact that a new monitor does not work versus an old monitor means that their software is not up to date. Install the WinDVD 11.7 Pro update. After restarting, re-test.

That was my first thought when I got the error, even though it worked before. I thought a secret update by Microsoft might have broken it. And so I did do that update first. Sorry that I didn't include that in my first question.I had thought it was a software issue, and that was also suggested on the forums to try first. But it didn't fix the issue. What was also suggested was that I go into the Nvidia control panel and see what was going on with HDCP since that handshaking needed to work before Blu-Ray disk could be played. And when I went to the control panel there I saw what I posted above. In my above post if you look at the text just above the picture of the video card and monitor with a turtle on it, you'll see that it says:

"Your graphics card and display are HDCP-capable"

But "underneath" that picture of the graphics card and monitor is an "alert" about there being a repeater installed, and that's really my question. The Nvidia "hardware" control panel is the one giving the alert and reporting that something between the two isn't right hardware wise. If it was software, then the control panel wouldn't care because it wouldn't change the hardware reporting. Also if you look at the picture below of a different monitor attached (I do have a few different ones to play with at home, but I love this one the best, you'll see that with a "different" monitor/TV attached to my PC it doesn't give the same hardware alert in the Nvidia control panel that the U3415W does: 

So as you see the same straight connections work just fine with other monitoring devices. Also I wasn't trying to say that the monitor had a repeater, just that something seems to be possibly reporting itself to the Nvidia control panel and is now "claiming" that it's a repeater. When I did an HDMI install a while back to a projector in a ceiling we used repeaters because the distance was greater than HDMI should have been run. I've used them before, and was familiar with that error, "but" that was because something was placed in-between the video card and the projector. And when that was found by the PC, it was reported for what it was. A distance repeater. But there isn't anything between my monitor or the video card. So the question I'm at a loss for is what is in the monitor that makes the video card believe that there's a repeater attached to it? I hope I'm explaining my question better, I've been told that I can be confusing at times.

Hmmm, yes that fixed it. The alert went away. I'm not sure why that fixed it, but it did. But don't I need that for the monitor function at it's highest ability? I'm using a regular Display port cable, but won't I lose the fastest streaming available with this disabled? Also I'm running 3 cards in SLI with this monitor so I'm wondering if I've wasting the potential, but it did fix the error (See below):

Thanks for you help!  (^_^) While I like WinDVD, I like the monitor better and I'm primarily using the Display port cable for Max speed/Hz, so I guess I should switch it back on. I guess VLC is what I'll use going forward since it doesn't care about the hardware/repeater, and it's free which is  a great plus. (^_^) Thanks again Chris for getting me the answer. I'll wait to see how it's handled at a later date, probably by Nvidia since 4K monitors will keep increasing in the market and it's Nvidia that's seems to be reporting it incorrectly. >=)

Concerning VLC, it allows you to go over 100% volume. Do not do this as it will overdrive the audio.

Ahhh, ok. I don't use the speakers on the monitor because I always use my headset. That won't cause an issue right? Just making sure so that I don't cause any issues.  (^_^)

Just don't exceed 100%.