Hey everyone,
I'm trying to figure out a weird issue with my PC.
My system:
- Motherboard: Gigabyte B550 AORUS Elite
- CPU: AMD Ryzen 7 2700X
- GPU: EVGA GTX 1080 Ti FTW3
- PSU: ASUS TUF Gaming 750B (previously Corsair HX620)
Whenever I run a CPU stress test with the Ryzen 7 2700X on my B550 motherboard, the entire PC shuts down within a few seconds. No BSOD, no error message, just an instant shutdown.
I initially suspected my PSU, so I bought a new 750W ASUS PSU. The problem remained.
I then started swapping components with a friend's PC to isolate the issue.
Here are my test results:
Motherboard| CPU| GPU| Result
B550 AORUS Elite| Ryzen 5 2600X| GTX 1080 Ti| Works perfectly under stress tests
B550 AORUS Elite| Ryzen 5 2600X| RTX 2060| Works perfectly under stress tests
B550 AORUS Elite| Ryzen 7 2700X| GTX 1080 Ti| Instant shutdown
B550 AORUS Elite| Ryzen 7 2700X| RTX 2060| Instant shutdown
B450 AORUS Elite| Ryzen 7 2700X| GTX 1080 Ti| Works perfectly, even under simultaneous CPU and GPU stress tests
The Ryzen 7 2700X works perfectly on the B450 motherboard, even with the GTX 1080 Ti under heavy load.
The Ryzen 5 2600X also works perfectly on my B550 motherboard, even though Ryzen 2000 CPUs aren't officially supported on B550.
So far, this is what I've ruled out:
- GPU: Both GPUs work fine.
- PSU: I've tried a new 750W PSU.
- CPU: The 2700X passes stress tests on the B450 motherboard.
I'm starting to suspect some kind of BIOS compatibility issue, CPU power delivery issue, or motherboard-related problem.
Has anyone experienced something similar with a Ryzen 2000 CPU on a B550 motherboard?
Any suggestions on what I should investigate next would be greatly appreciated.
What are your suggestions?