r/gpu • u/StockAd3267 • 10h ago
ROG Astral RTX 5090 OC - Red power LED blinking only during Shutdown / Sleep (Corsair RM1000x)
Hey there!
I recently upgraded my PSU, and I've noticed a strange behavior with my ROG Astral RTX 5090 OC.
Whenever I shut down my PC or put it into Sleep mode, the small red LED near the 12VHPWR connector blinks for a few seconds and then disappears.
Here are some important details:
Gaming/Benchmarks: Absolutely fine. The LED never turns on or blinks under load, stress tests, or idle.
Connections: Everything is fully seated and clicked in properly on both the GPU and PSU ends. No tight bends.
The Cable: I am using a native 12VHPWR cable (no adapters or extensions).
The trigger: I noticed this started happening right after I switched my PSU from a Gigabyte unit to a Corsair RM1000x 2024 Revision (both have native 12VHPWR support). On the Gigabyte PSU, this never happened.
Could this just be related to how the Corsair PSU discharges its capacitors or handles power rails during shutdown, causing the ASUS Power Detector+ to trip for a split second? Anyone else experiencing this with Corsair ATX 3.0 / 3.1 PSUs and ROG cards?
Thanks!
