9800x3D / MSI Carbon x670e Intermittent Boot Issue

Smithy18

Smithy18

Smithy18

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Joined
6 Jun 2020
Posts
51
Location
Wiltshire
Hi,

I've recently upgraded my computer from an AM4 setup over to AM5, full spec's below.

MSI Carbon x670E
9800x3D / Noctua NHU-12S Cooler
G.skill 64GB DDR5 6000mhz CL30
RX7900XT
Samsung 990 Pro 2TB (gaming)
Samsung 980 pro 256GB (windows drive)
Samsung 980 Pro 1TB (gaming)
ASUS Rog Thor 850w platinum PSU

Since doing the upgrade the computer is very inconsistent with start up / shut down. When i power on the PC sometimes it'll boot straight up to desktop as normal, other times it'll boot up and just hang on a black screen forever. When it hangs sometimes but not all of the time the EZ debug light is solid yellow under BOOT. The only way out of this black screen is to press the restart button, when doing this it sometimes starts fine and other times it repeats the black screen / monitors off. I can get into the bios no problem on the times when it actually boots properly, when the pc does boot and is up and running it runs and games perfectly, good temps and nothing alarming. I've updated my Mobo bios to the latest version and did a clean install of windows 11 after the hardware changes. I have all of the correct drivers from AMD / Windows installed.

Now i understand that AM5 needs to train memory? but i don't feel like this is normal behaviour. I've had a search about on the internet for similar issues but can't find any answers that have worked (EXPO is enabled). I've built a handful of computers before without any issues, im wondering have i missed something or potentially messed something up or even the possibility of something faulty?

If anyone could possible shed some light on this issue that'll be great.

Thanks
 
Roughneck said:
Have you tried reflashing to a earlier bios? if so does it still do the same thing?
Click to expand...
I'll revert back to a previous version now and retry.
freddie64 said:
Did you install Windows with only the 256GB drive installed?

Does it work ok with just the Windows drive installed?
Click to expand...
No, i installed windows with all 3 m.2 ssds installed. I've not tried it with the other 2 SSD's removed.
mickyflinn said:
Does this occur when memory is at stock settings , expo disabled ?
Click to expand...
If anything i'd say it was worse with expo disabled?
 
Smithy18 said:
I'll revert back to a previous version now and retry.

No, i installed windows with all 3 m.2 ssds installed. I've not tried it with the other 2 SSD's removed.

If anything i'd say it was worse with expo disabled?
Click to expand...
You need to download and run mem test and test at stock and expo .

Also try running with just one stick then try the other stick by itself.
 
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mickyflinn said:
You need to download and run mem test and test at stock and expo .

Also try running with just one stick then try the other stick by itself.
Click to expand...
I shall do this later this evening, should i be using mem test64 or 86? I've reverted back to a previous BIOS, unfortunately it didn't make any difference.
 
Smithy18 said:
No, i installed windows with all 3 m.2 ssds installed. I've not tried it with the other 2 SSD's removed.
Click to expand...
Windows some times put hidden boot files on extra drives if they are installed (not sure if it still does this) and could be failing to locate them.
Think you should get a on screen message about missing boot media, or something like that though.

If it boots and runs ok with only the 256GB drive installed then all files are on that drive.
 
If its memory training when its got the black screen have you tried enabling Memory Context Restore to see if this stops the black screens?
 
ED209 said:
If its memory training when its got the black screen have you tried enabling Memory Context Restore to see if this stops the black screens?
Click to expand...
I haven’t tried this yet, I’ll test it out. Cheers
mickyflinn said:
Yes.

You won't pull anywhere near 850w on boot.

Also Disable memory fast boot in the bios it can cause problems.
Click to expand...
It passed mem test with completely stock settings, just retrying with expo enabled this time. Thanks will do
 
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mickyflinn said:
You need to download and run mem test and test at stock and expo .

Also try running with just one stick then try the other stick by itself.
Click to expand...
Ok I’ve ran memtest86 with and without EXPO on. Both tests have passed with 0 errors. I removed a stick of ram and booted up but it was exactly the same. Then tried the other memory stick on its own. No difference, behaves the same as when both memory sticks are installed.
 
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Smithy18 said:
Ok I’ve ran memtest86 with and without EXPO on. Both tests have passed with 0 errors. I removed a stick of ram and booted up but it was exactly the same. Then tried the other memory stick on its own. No difference, behaves the same as when both memory sticks are installed.
Click to expand...
Pull the GPU and try the onboard graphics on the motherboard use it for a while and see if the symptoms occur.

Do you have any spare parts to test such as GPU and PSU ?
 
mickyflinn said:
Pull the GPU and try the onboard graphics on the motherboard use it for a while and see if the symptoms occur.

Do you have any spare parts to test such as GPU and PSU ?
Click to expand...
Ok I’ll give that a go this evening, unfortunately I don’t, I jumped the gun and sold my old psu and gpu
 
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