New GPU - issues/problems

Hey everyone. So, I went out today and picked up a brand new NVIDIA GeForce RTX 4070. I got everything installed, seated it perfectly in the rig, and hooked up the 6-pin power connector just like it should be. But here’s the kicker: when I hit the power button, the card kicks on for a few seconds, then everything just stalls—the fans stop spinning and my computer hangs right during the macOS startup sequence. I'm starting to wonder if my power supply is the culprit. I’ve got a 600W unit, but it’s an old EVGA 😢 model, and honestly, looking at how long I've had it, I wouldn't be surprised if it isn't even putting out a true 600W anymore, haha. Anyway, there are these two little LED indicator lights right by that 6-pin connector on the card. The first one stays lit, but the second one remains dark. Could this all be happening because my power supply is basically junk? I’d love to grab a fresh one, but I really don't want to throw money down the drain until I'm absolutely certain that's where the issue lies. If anyone has any insight, I’d truly appreciate the help 🙂

Maybe try borrowing a power supply from someone—a buddy or a neighbor—or just pop your own GPU into another rig to see how it behaves? Honestly, though, I’m not even sure the PSU is the culprit here...

Larry Ortiz5 said:Maybe try borrowing a power supply from someone—a buddy or a neighbor—or just pop your own GPU into another rig to see how it behaves? Honestly, though, I’m not even sure the PSU is the culprit here...

If you don't think it's the power supply, then what's the play here? Are we looking at a faulty graphics card? Or maybe the motherboard is acting up? It feels a bit early for that, though, since the whole setup isn't even two years old yet, and it's certainly not like the hardware lacks the necessary support 😢

cosmicbison38 said:If you don't think it's the power supply, then what's the play here? Are we looking at a faulty graphics card? Or maybe the motherboard is acting up? It feels a bit early for that, though, since the whole setup isn't even two years old yet, and it's certainly not like the hardware lacks the necessary support 😢

Honestly, I'd bet my money that your power supply is toast.
😁

Robert Rodriguez2 said:Honestly, I'd bet my money that your power supply is toast.
😁

I’m leaning in that direction too, mostly because I did some digging online—scouring through various tech forums and enthusiast sites—to make sure my motherboard was actually compatible with this specific GPU. Once I cleared that hurdle, I started wondering if the CPU might be the culprit, though I wasn't entirely certain about the technicalities there. At this point, it feels like the power supply is the last remaining variable in the equation. Plus, I noticed something odd: the graphics card has these two little LED indicators right by the 6-pin power connector, and only one of them is lit up instead of both. It’s a bit of a puzzle! Anyway, I really appreciate the help; I’m planning to head over to Best Buy tomorrow where I picked it up to see if they can shed some light on the issue.🙂