Liyanlin
Hello EVGA fans,
 
Problem:
 
I have my RTX 3080 card since early November, have been playing games for a while now, overall I have a good experience.
But today, it crashed I have to try to reboot, however, that did not solve the problem. Basically, the monitor doesn't have a signal display. And mouse and keyboard are not lighting up. The graphic card ran fine for the last two weeks, why it happened today, I wondering.
 
Methods I tried:
 
And I try to use a different PCI slot for another try, It did not work out.
Just check my build, I put on my oldest graphic GTX 750 ti, magic happens, the system successfully displays the login screen.
I was using the 850W power supply with I connect the graphic card with 3 x 8 Pin, one of them is a daisy chain. 
I have contact with the EVGA tech support team today, they said it might be the DP cable I was using. So I tried using HDMI, still the same problem.
 
Questions:
 
Should I try to change my power supply to the one with 3 individual 8 Pin slot ?
 
Any of you experiencing this problem?
 
Thank you for your answer.

Cathanasselis
Hello! I have had this same issue with my replacement 3080 after the first one died with the one red light above the left pcie cable.

I have tried 3 different PSU’s, all 850w gold rated. 2 of them were brand new and the problem still persisted. Waiting on my current RMA replacement. I’ve seen a lot of posts about black screens happening but the pc still running with these cards but never saw someone post about their keyboard and mouse losing connectivity like mine did. I will say that I did not daisy chain any of the cables and used all individual cables.

Wish I could offer advice or a workaround for you. I have tried every possible work around I’ve seen on the forums and still have the same problem. But my 1070ti works like a charm.

Cathanasselis
Yeah unfortunately it seems like a common issue with some of these 3080’s sadly. I tried a brand new mobo as well as PSU and still ran into this exact problem. EVGA has been super helpful through all of this. They just asked if I used different PSU’s or cables and I let them know that I have used 3 different and 2 brand new 850w PSU’s with the same issue and I told them the troubleshooting I did. I even tried brand new display port cables that were mentioned on the forums and no dice. So then they opened an RMA for me. Hopefully 3rd cards a charm for me. 🤞 I’ve only been able to get like 20 min of gaming between the 2 cards.

1. When the black screens happen, do you still see hardware activity light on your case flashing? If you have any remote-desktop software, does your machine still appear as up and online? If you have another computer, try pinging your 3xxx computer, is there a response?
2. Is this black screen constant, meaning you haven't been able to get any further display shown?
3. If not constant, do these black screens only happen after a reboot, or do they also happen after a monitor goes to sleep after non-use?
4. Does the BIOS/POST display on the screen when rebooting?
5. What type of display connection are you using: Displayport or HDMI? Do you have more than one monitor?
6. Around what date did you receive your card? Does it have the red lips?