Problem with 7600X + Gigabyte B650M K, Memory failure

[Clintonyo]

I buy a new pc part in March. The part list : Gigabyte B650M K, Ram KYO STYGIANZ DDR5 2x16GB 6000Mhz (i think this is OEM brand), AMD 7600x, and a new cooler. I still use the old PSU (corsair RM650) and old storage. But when the pc is finished and i want to play some game, the pc always BSOD with error mainly on ATTEMPTED_WRITE_TO_READONLY_MEMORY. After that i tried testing my memory and cpu using memtest & OCCT. my result indicate the memory is failed and CPU + Memory test is fail. My first suspect is there is a problem with my ram. So after that i contact the RAM provider, and try to RMA the product. After i send the ram and communicate with my RAM supplier, they said if there is no issue with my ram, and furthermore they give a new ram for me. After my ram is back and testing again, still the same issue. I talked to my friend, and i asked for his help because his setup using AMD 9900X, A620 mini itx motherboard, with crucial ram. First i swap my cpu with his, and there is no problem with my cpu on his system. Then i tried using his cpu on my setup, but i need to update my bios first. After update, for some reason using his cpu in my setup still fine. So i swap again to my cpu, but after a while, my setup failed again. Then after i swapped my ram to his, the system still failed. My suspect now to the motherboard. The problem is now, after i waited 1 month after i send back the motherboard (i dont know why it takes that long to RMA the motherboard), and i think they didnt swap my board because they said the test is ok. But still, the problem still occur now. Well i need you guys how to pinpoint the problem, is it because of the cpu, the motherboard, or anything else? My suspect is still on the motherboard, because i check the cpu on my friend setup, and for some reason after updating the bios, for sometimes the problems is fixed (please note that i test with my friend setup is only several hours, and his house is far, so i cannot freely test with his pc).

[Clintonyo]

For some reason, i cannot trust the motherboard testing proses from the authorized service center because i dont talk directly to them. And i dont know their testing setup. Because for some reason, if i test using windows memory diagnostics tools, the test cannot capture the problem with my memory.

[Clintonyo]

Oh and if the pc are used for something light, it wont be a problem. I never tried to stay on a long time tho, but i make this thread using my pc.

And if you guys ask what bios version, i forgot but i think i used the newest bios available on April.

[Clintonyo]

Quick update. After i underclock to 3Ghz using ryzen master, the occt test are about normal (well the test only 5 minutes but i think its enough data because last time i test, under a minute and already failing). The problem is, when i tried underclocking it using bios, if fail. Well if i change from auto to desired core multiplier, it fail. So someone can tell me if this is because of CPU are failing on normal condition (auto config), or mobo failing due to vrm cannot support good power to cpu?