Successful POST followed by restart.
Successful POST followed by restart.
Well, one thing I can share is that I wasn't aware of this before because I hadn't checked reviews of this particular power supply model before. It seems highly unlikely the issue lies with the power supply itself, as there are some of the best ATX power supplies out there. Perhaps only a few other units have matched its performance according to the reviews I've seen. So, I won’t jump to conclusions—it definitely doesn’t appear to be a PSU problem at all.
Let’s begin fresh.
Have you recently assembled this unit, and has it functioned properly before or has there always been concerns? Have you removed the CPU to check for any bent pins on the motherboard? It might help to use magnification tools like a magnifying glass or reading glasses to spot even minor issues. Any deviation could be the root cause. After disassembly, clean both the top of the CPU and the bottom of the cooler thoroughly, then apply fresh thermal paste. You’ll need some thermal paste and isopropyl alcohol (preferably 91% or higher) for cleaning. Paper coffee filters are a good choice—they’re inexpensive, lint-free, and won’t leave residue that could affect the paste application.
This build is quite the mix of original parts. The mobo and cpu were swapped out after a tube popped from a fitting in the cooling loop. The 6400 ram was also included, but I've run into problems with it before whenever I tried to use expo (due to compatibility issues).
The only remaining pieces from the leak are the 4090 and the PSU. Unfortunately, I damaged two pins on the mobo during one of my reseating attempts. I could show pictures, but after fixing it, I can't spot the misaligned pins clearly (thanks to my wife's steady hands and tweezers).
If you think there might be a pin problem, you might just have to rely on the RMA gods or check if the nearby shop that fixes motherboards is worth their time.
If you bend a pin or pins and then straighten them, it's likely that the bent part is no longer visible, though the pin might have broken beneath the surface you can see. This happens often when a pin is bent in one direction and then returned to its original shape. Imagine stretching a very thin wire back and forth until it snaps, but here the material is extremely soft.