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PC Processors

spark_tornado
Adept I
‎01-10-2023 12:12 AM

MSI x570-a pro MB, Ryzen 5900x supports dual channel but not Ryzen 5950x

MSI x570-a pro MB, Ryzen 5900x supports dual channel but not Ryzen 5950x.

SLOT A1 and A2 are not working but B1 and B2 works fine.

If there is a RAM in B1/B2 and A1/A2 it just doesn't POST. No display.

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6 Replies
goodplay
MVP
‎01-10-2023 12:32 AM

A2/B2 is the norm, install A2 first then B2 is usually mentioned in mobo manual.

For 4 ram modules make sure it is a kit and compatible with mobo/cpu combo on the msi site list.

My PC- Ryzen 5 5600x, B550 aorus pro ac, Hyper 212 black, 2 x 16gb F4-3600c16dgtzn kit, NM790 2TB, Nitro+RX6900XT, RM850, Win.10 Pro., LC27G55T.
spark_tornado
In response to goodplay
Adept I
‎01-10-2023 11:23 AM

I started with A2, as soon as there is a RAM in A1/A2 slot, it wont boot.

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misterj
Big Boss
‎01-10-2023 03:37 AM

89spark_tornado, unless you have some funny/bad memory looks like MB RMA time to me. Enjoy, John.

spark_tornado
In response to misterj
Adept I
‎01-10-2023 11:22 AM

Thank you, could this be a CPU issue instead of MB because all slots work with 5900x CPU.

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misterj
In response to spark_tornado
Big Boss
‎01-10-2023 12:05 PM

89spark_tornado, well it could be. I had problems with losing memory controllers and RMAed the processor but got the same errors.  I tend to believe MB first, RMAed several some more than once. Have you checked out AMD Specifications? Please check it out and if OK I suggest you talk with your MB vendor. Thanks and enjoy, John.

MADZyren
Paragon
‎01-10-2023 12:07 PM

If system works with another CPU but not with this one:

1) Make sure your BIOS version supports this new CPU
2) Could well be an issue with CPU - maybe some CPU pins are damaged or something wrong with memory controller in CPU