Motherboard or processor?

Question

motherboards

Hello!
Background here and here .
It's most likely the motherboard. Southbridge problem. This is just the beginning and it will only get worse in the future. This is the first and most likely guess.
The second suggestion is the CPU, but it seems less likely to me than the first.
But the problem is exactly in one of these two components.
There is no guarantee for mother or CPU. I also don’t want to take it to the service and pay money for a full diagnosis (they like to wind up the price tag there). In general, I'm interested in your opinion. Most likely there are experts here who can more likely tell me what to buy - a new mother or CPU.
I hope for your help.
Thanks in advance.

Answer 1

If you test well, there’s absolutely no way - neither friends, neighbors, nor at work have a similar iron - buy a motherboard with MoneyBack.
It's not the problem - change it to the processor ...
Remotely, no one can confidently say anything - the memory controller sits in the processor. And the memory itself is connected to the motherboard and powered by the motherboard.