Hey everyone! I recently started experiencing issues with my Zotac RTX 4080 graphics card. After booting up my PC, I noticed it had a constant red blinking light. At first, I thought it was just a glitch with my RGB settings. However, after some research, I figured out it was related to power delivery. I tried reseating the 12VHPWR cable, and it seemed fine for a bit, but the blinking returned the next day. I've already checked and reseated all the cables from my PSU to the GPU, including the splitters, but the issue persists.
I'm wondering what my options are for getting a replacement under warranty. I found a compatible cable from Corsair, but it's currently out of stock. In the meantime, is it safe for me to play games like Counter-Strike while I wait for a new cable? Also, I have some video footage of the blinking, but I can't upload it here.
3 Answers
Make sure you visually check both ends of the connector and the GPU for any damage like melting or discoloration. It’s not a good idea to keep using the cable for heavy tasks like gaming if there are issues because it could potentially damage your expensive GPU. Get a new cable, or contact Corsair for a replacement. If that doesn’t work, there might be an issue with your PSU or GPU itself.
I’d recommend reaching out to Corsair support. They might be able to send you a replacement cable. It’s worth a shot!
That red blinking LED on your Zotac 40-series card isn’t an RGB problem – it’s actually detecting a power delivery issue on the 12VHPWR connector. You did well to reseat the cable, but the fact that it came back suggests the cable or connector itself might be faulty, not the GPU. Common issues could be cable degradation, a pin misalignment, or even heat resistance problems at the connector. This is what Nvidia and their partners warned us about.
Are you using AI to comment? LOL!

Hey Tybuzz, I just checked everything and after removing the PSU to take a photo for Corsair support, the GPU stopped blinking once I reinstalled it. I didn't see any visible damage, so maybe the cable is fine? Could it be that loose 220V connection caused the issue? I've also created a replacement ticket with Corsair.