Can't get ProArt Display to work

[ANDY_ASUS]

Bought two Pro Art 27" Monitors for my photography a month ago, but can't get either to work on Alienware PC. Troubleshooting guide does not help. If I plug my old 27" dell monitor in with the Displayport cable, works fine. I can change the cable to connect to the Asus and once or twice it worked. However, as soon as I attach Asus and Reboot and PC just keeps beeping and won't boot (6 beeps meaning Video card/chip failure).

So PC (dell6core i7) works fine with Dell 27" monitor, but not with Asus 27", both using Displayport.

I have checked the cables and selected displayport on the OSD menu, no help. I am guessing I will need to change the video card, which is a GeForce GTX760ti. It has a maximum resolution of 2560x1440. Could that be the issue?

Thought it might need a driver installed, but if it halts at Bias, this is before the driver.

Any Help appreciated

[ANDY_ASUS]

- Both Pro Art monitors work at 3840x2160 (and lower)

The issue is that the PC will not boot with the Asus  connected, the motherboard thinks there's a video hardware problem. This is nothing to do with resolution.

So I can attach the dell 27" monitor with DisplayPort and boot at 3840x2160, all good.

I can then unplug the DP cable and  attach the Asus  monitor (only one of them, but two will work). When I do this, the Asus monitor displays correctly. The issue is the PC will not boot with the Asus monitor attached, the motherboard beeps and won't boot.

This type of problem is a hardware issue, not resolution issue.

The mystery is why the Dell monitor works with the DP port and the Asus doesn't.

[Aureliannn_ASUS]

Hi @ANDY_ASUS ,

Thank you for your confirmation.

Based on your description, we believe that the reason you cannot drive two 4K displays simultaneously is that your graphics card's performance is insufficient. 

Our engineering team has confirmed that the graphics card model you are using is older and its bandwidth may not be enough to support two 4K resolution displays simultaneously.

We recommend replace your graphics card with a more powerful one that has sufficient bandwidth to drive two 4K displays simultaneously.

Thank you.

[ANDY_ASUS]

Hi bought a NVIDIA GTX1070, I tried it yesterday and it works fine with dell, but won't boot with ASUS. 

This will be a hard issue, nothing to do with resolution (as changing the graphics card showed). also, I am only trying one Asus monitor, no difference. If you read back you will see that the monitor works when I boot with Dell and swap over the cable to ASUS...so its a test on power up that is failing.

My guess the that there's a voltage on a pin that the mother board doesn't like. If I had a beak-out box for DP, I'd compare the the working Dell versus the ASUS.

I did come across a "Pin 20 DP" issue when I first investigated. That issue was a cable issue, but it is possible that Alienware made some mistake?  The problem is that you said that your guys said they tried this very alianware MB. I will persist a bit longer and try a resetting CMOS bias to defaults and any ideas anyone else has.

[ANDY_ASUS]

Addition: Meant to say, it could be a bias error too, so I am going to try update the bias today.