New monitor, same setup, won't boot (switched from DVI to DisplayPort)

[officespacer]

I just bought a new Samsung chg90 series c49hg90dmn Ultrawide 144hz monitor. I didn't realize it at the time of purchase but there is no DVI connection to the monitor, so I had to change from my normal DVI output to a DisplayPort setup. Upon changing to the DisplayPort, everything seemed to work fine, at first. After shutting down last night and trying to start up today, the computer would not boot. The motherboard posted a 62 debug code on the LED output which appears to be related to faulty GFX cards.

Now, I do not believe there is any issue with the gfx card because I'm using it right now, after plugging in a DVI monitor, alongside my display port ultrawide. I can even unplug the DVI monitor with no impact while I'm still running. If I restart after doing that, I run into the issue all over again. I don't even see the starting splash screen. I have to imagine it is driver related, but I am up to date on my drivers and automatically update with GeForce experience.

Any thoughts on how I can address this? Currently, I'm going to see if just letting the PC go into sleep mode instead of a full shutdown solves the issue.

I am not looking to test different hardware configurations because my setup is watercooled with a custom made loop, I cannot easily move things around without cutting new tubes and draining/adding water back into the system.

I'm running the following:
Core i7-4770k 3.5Ghz
Asus Maximus VI Hero LGA1150
EVGA GTX 780 3GB SC
Gskill Trident X 16GB DDR3-2400
Samsung 840 Pro 256GB SSD for OS
Corsair 800W PSU

water cooling setup

 

[hang-the-9]

Contact EVGA support, although your card is likely out of warranty. If a a DP port does not work but other connections do, it points to a bad port as the likely issue. Try with another cable and/or monitor on the DP port to rule things out if you can.

 

[4745454b]

Sounds like a driver issue. Update the bios perhaps seeing as it happens after a shut down? Might also want to try an older driver and see if it's just something broke in the newer driver.

 

[betazero]

Like you, I have an EVGA GTX 780 (03G-P4-3784-KR), and I just bought a refurbed CHG90. First day, worked great using DP. Second day, no image. Tried unplugging and plugging DP cable and it worked. Third day, no image and replugging did not work. (no pre-OS BIOS stuff either - which I don't think ever displayed.). I have an ASUS impact MB so no fancy LED error display for me. I assumed it booted but just didn't display anything. Messed around with the included mini-DP cable. Tried HDMI, nothing. Got on another computer to download latest monitor BIOS, and at some point while trying to update the BIOS (which did not work - maybe they updated it as part of refurb process, and give a misleading error if you try to update with same BIOS?), the monitor started working again (on HDMI) but don't know why. Then the next day I got it working with DP again, but then today I had all sorts of trouble again, and once again eventually got it working with HDMI. I'm going to try leaving HDMI hooked up and see if I stop having problems. I saw one other thread on here where other CHG90 owners had similar problems. Somebody suggested it was a faulty monitor and a replacement fixed it. What ever happened with yours, OP? One more thing, I can verify my DP port had worked flawlessly before this on a 2560x1440 monitor.