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ASRock B450M Pro4 memory slot A2 stopped working

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AlvMF1 View Drop Down

Joined: 08 May 2021
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    Posted: 08 May 2021 at 8:21am
Hey everyone.

I have a ASRock B450M Pro4 with latest BIOS running a Ryzen 5 3600.

When I first install my system I put 2 DDR4 on slots A2 and B2 for dual channel. That worked fine. Later I loaded the XMP profile for 3200Mhz (which my memory supports).

I had a run of almost 2 months with this setup. However, one day the PC crashed, did a few post cycles then posted again with default configs. Seeing that I went back to the BIOS and when I loaded same XMP profile from before, the post cycles occurred again until defaults loaded.

Running like that for a couple of weeks, similar situation happened, but this time the PC would not post. Once I removed the memo stick from A2, everything was good. So I tested one memo at the time on A2 both were not able to boot.

Now I have the memos on B1 and B2 with the XMP profile loaded. Everything is fine except for the fact that I don't have dual channel anymore.

Any tips? Should I just RMA the mobo or is that a CPU thing?

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