[SOLVED] Problem involving RAM modules at boot and after

[siriusv]

Hi. This last Sunday I came across a curious error on my PC: when I turned it on, three beeps in a loop coming from the motherboard and no information on the monitor.
I suspected RAM memory right away, as I had suffered from this error before. However, whenever I changed the slot memories everything returned to normal.
So I went to change them again. Same mistake. I tried to put one by one and go testing it, to clear up the doubt that it could be a defect in one of the two. Everything normal. They did not have beeps when inserted alone on the motherboard. Curious because, not so long ago, they worked in harmony.
I reset the BIOS by battery, same error.
I tried, without any more ideas, to put them back at the same time, but with the slots swapped, again. 3 looped beeps. Until one hour it booted. BIOS recognizes both memories. However, it informs that only 8gb is counting (they together add up to 16gb)
I don't know what caused this error. I've also tried to go into safe mode in Windows, but I doubt it's any error related to this as the problem starts in the BIOS. I do not know what else to do. I believe the problem is compatibility, because both are functional on their own and in all slots, just together they give an error. But I don't understand either, because they were working together a little while ago.

memories are
Kllisre 8gb 2666mhz DDR4 CL19
XPG Gammix 8gb 2666mhz DDR4 CL16
Processor: Ryzen 5 2600X
motherboard: MSI B350M PRO-VH PLUS



CPU-Z recognizes dual channel and 16gb, but the task manager does not. Grateful.

CPU-Z:

https://imgur.com/3VS8cNk

View: https://imgur.com/3VS8cNk

CPU-Z:

https://imgur.com/y4rZZ75

View: https://imgur.com/y4rZZ75

CPU-Z:

https://imgur.com/yqZw2yp

View: https://imgur.com/yqZw2yp

Task Manager:

https://imgur.com/DboJdk0

View: https://imgur.com/DboJdk0

Resources Monitor:

https://imgur.com/uUHF69B

View: https://imgur.com/uUHF69B

 

[Fix_that_Glitch]

You have the memory in the wrong slots. Put the first stick in slot 2 and the second one in slot 4.

 

[siriusv]

You have the memory in the wrong slots. Put the first stick in slot 2 and the second one in slot 4.

Hello! This MOBO only has two memory slots.
By the way, I just solved the problem by now. Looks like it was debris on memory contacts. Cleaned there, and then, like magic, worked. Thanks for your help.

 

[Fix_that_Glitch]

Hello! This MOBO only has two memory slots.
By the way, I just solved the problem by now. Looks like it was debris on memory contacts. Cleaned there, and then, like magic, worked. Thanks for your help.

well thank for the credit but you helped yourself!