Any ideas?

RushFan

RushFan

Gawd
Joined
Nov 3, 2005
Messages
743
I have solved this already, but I wanted to know if any of you gurus know the "why?".

I have a 5900X and Asus Crosshair VIII Hero WiFi motherboard (rest of specs in sig).
I haven't been living at home much for the last few months, but every time I came home, my PC was locked up solid (no blue screen). Power off and restart and it would come up just fine until the next time I came back and it was frozen.

I came home recently and the computer would not boot (I could get into BIOS) but Win 11 would not load (spinning circle and freeze), I brought system down to single stick of RAM, swapped power supply, video card, and just keyboard/mouse. I could not even get the computer to boot Ubuntu or a Win 11 USB installation.

I swapped in my son's 5600X and my system worked perfectly.

WAIT! HERE'S WHERE IT GETS WEIRD!!!

I put the 5900X in his B550-PLUS M/B and it worked perfectly!

From this, I assumed it was my X570 Motherboard. Asus RMA'd my M/B, received the new one, installed it, the 5900X...and still the exact same problems!

AMD decided to then do an RMA, so I got the new 5900X, installed it, and my system is perfect.

The question...
Why would the 5900X work in the B550-PLUS M/B but not my X570? Benchmarks, games, everything seemed to work perfectly with my 5900X in his B550 M/B.
 
Computing is not an exact science, especially not when BIOSes are involved.
 
As already mentioned, BIOS updates often add stability and compatibility fixes.
 
arestavo said:
As already mentioned, BIOS updates often add stability and compatibility fixes.
Click to expand...
This system worked rock solid for more than 2 years. I even tried the most current BIOS (I was 2 behind) and it was still broken. /shrug
 
so you want people to take guesses over something you already resolve? no. just fucking spill it.
 
pendragon1 said:
so you want people to take guesses over something you already resolve? no. just fucking spill it.
Click to expand...
Comprehension much? The PROBLEM was solved -- the computer is fixed. I want to know why a bad processor worked in one system, but not in the other.
 
x570 chipset is connected to the cpu via pcie-gen 4 lanes, b550 via gen 3. So the 5900x likely had suspect pcie controller in the io die which allowed it to work fine at gen3 speeds but not gen4. I think this is sometimes an issue on 5000 series, not common but not unheard of. It more often rears it's head with gpu or usb issues.
 
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