Where is the error?

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   x399 professional
g.skill 4x8gb ddr4-3200 cas 14 trident z

Mobo came with bios 1.4 and booted fine with all 4 sticks, but memtest7 only showed 16g. So I flashed to bios 1.8 and it wouldn't boot up with anything in either D1 or D2, but I was able to get it to work with 3 sticks even at xmp and memtest stable overnight, which now saw 24g with the bios update.

I flashed to 1.7 due to another guys post here who had a similar problem with 1.8, and it boots up and the bios sees quadruple channel memory, but memtest still only sees 24g.

I flashed with just two good sticks back to 1.8 and still the same state as before. It seems to be either a bad MOBO or bios. I can swap out sticks and any work fine on 6 of the slots, but none work in the d1 and d2 slots it seems.

When it is stuck in a boot loop it seems to be error code c0.

Not sure what to do or whose fault it is; I guess it could be cpu but I'm thinking mobo, so I sent asrock technical support an email. Should it boot with just 1 stick in d1 or d2?

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jjoshua2 Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 27 Nov 2017 Status: Offline Points: 6	Post Options Post Reply Quote jjoshua2 Report Post Thanks(0) Quote Reply Topic: Where is the error? Posted: 27 Nov 2017 at 11:22pm
	x399 professional g.skill 4x8gb ddr4-3200 cas 14 trident z Mobo came with bios 1.4 and booted fine with all 4 sticks, but memtest7 only showed 16g. So I flashed to bios 1.8 and it wouldn't boot up with anything in either D1 or D2, but I was able to get it to work with 3 sticks even at xmp and memtest stable overnight, which now saw 24g with the bios update. I flashed to 1.7 due to another guys post here who had a similar problem with 1.8, and it boots up and the bios sees quadruple channel memory, but memtest still only sees 24g. I flashed with just two good sticks back to 1.8 and still the same state as before. It seems to be either a bad MOBO or bios. I can swap out sticks and any work fine on 6 of the slots, but none work in the d1 and d2 slots it seems. When it is stuck in a boot loop it seems to be error code c0. Not sure what to do or whose fault it is; I guess it could be cpu but I'm thinking mobo, so I sent asrock technical support an email. Should it boot with just 1 stick in d1 or d2?

jjoshua2 Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 27 Nov 2017 Status: Offline Points: 6	Post Options Post Reply Quote jjoshua2 Report Post Thanks(0) Quote Reply Posted: 27 Nov 2017 at 11:31pm
	It doesn't boot with just 1 stick in d1 or d2, but does with just 1 stick in c2 on the 1.8 bios. Tested 1.7 bios same deal. So RMA the motherboard? or CPU too? Edited by jjoshua2 - 27 Nov 2017 at 11:40pm

datonyb Members Profile Send Private Message Find Members Posts Add to Buddy List Senior Member Joined: 11 Apr 2017 Location: London U.K. Status: Offline Points: 3154	Post Options Post Reply Quote datonyb Report Post Thanks(0) Quote Reply Posted: 28 Nov 2017 at 12:44am
	remove and reseat the cpu
	[url=https://valid.x86.fr/jpg250][/url] 3800X, powercolor reddevil vega64, gskill tridentz3866, taichix370, evga750watt gold