Hello, here's my setup:
- ASUS ROG Z690 Formula motherboard
- i7-14700KF processor
- 2x32GB Corsair Dominator RAM, 5200MHz
- High-end 1200W Thermaltake power supply
- Up-to-date BIOS
All components are new, except for the motherboard, which is used.
- My case is fully open, so there's no overheating
- My cooling system is efficient (CPU hot spot at 90°C max after 30 minutes of Cinebench 2024), so there's no CPU throttling. - My BIOS is the latest v4301 update (also Intel ME)
- Default BIOS: F5 key
- I tried with a single RAM stick instead of two, I tried all four slots
- I tried with the minimum number of peripherals connected
- I tried with a different graphics card
- 24-pin power connectors + the other two 8-pin connectors connected
- My RAM is on the motherboard manufacturer's recommended list
- I tried with or without XMP for the RAM frequency
- I used the Intel diagnostic tool and no anomalies were detected on my CPU
- I've never overclocked the CPU (new)
My system is very unstable, the machine has trouble booting, and when I get to Windows, I experience sudden shutdowns without necessarily even using the machine.
A reboot follows, which sometimes even loops, freezing before the BIOS even displays. (See the video below, YouTube link.)
And strangely, when I apply a negative voltage between -0.025V and -0.125V to the CPU, miraculously, it boots! But again, I still have an unstable system.
Do you think the motherboard is dead? For me, it might be a voltage circuit problem, or maybe I'm missing a parameter in the BIOS?
Video link here:
https://youtube.com/shorts/Vwc5DCEW__s?si=Lu5hdotKj8HsUtPg
Thanks in advance.
Best regards.
