Enabling EXPO profile causes black screen after leaving BIOS

Drake5

Drake5

Drake5

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Joined
12 Dec 2005
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Hello,

I have a Asrock B650M HDV m.2 motherboard with a 9600x running the latest BIOS. When I set my DRAM profile to use the EXPO profile and then leave the BIOS, my PC stays on a black screen with no display on the monitor and then the monitor goes into standby mode.

If I disable EXPO this behaviour stops and I can go into the BIOS and leave the BIOS without issue

Any idea what the cause of this could be?
 
Bump - I'm watching this. I feel like I had such a handle on DDR4 but DDR5 has given me some weird behaviour over the recent years, including OP's issue.

With my limited knowledge, my first troubleshooting step here would be to remove one stick at a time - maybe one of them is unwell.
 
How long are you leaving it, likely trying to memory train at the EXPO speeds, if it fails to load them it should reboot eventually
 
Glanza said:
How long are you leaving it, likely trying to memory train at the EXPO speeds, if it fails to load them it should reboot eventually
Click to expand...

The longest I've left it is 15 minutes so far and it just stays black

Tempted to dry a different set of RAM even though this one passes Windows memory tester with no errors
 
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Tetras said:
What memory are you using? Does it have more than one profile?

Have you tried enabling EXPO profile and manually setting the memory to a lower frequency?
Click to expand...


CORSAIR VENGEANCE DDR5 RAM 32GB (2x16GB) 6000MHz CL36-44-44-96 1.35V AMD EXPO Intel XMP 3.0 Computer Memory – Grey (CMK32GX5M2E6000Z36)​


It has 3 profiles, auto, XMP and EXPO. I haven't tried manually setting the memory to a lower frequency but I can try that
 
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Cross posted in your main thread

Is the bios up to date?
If so, then I would suspect that the CPU has a weak memory controller that can't do 6000 mhz.
It's rare, but can happen unfortunately and sounds like you may have lost the silicon lottery
 
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tamzzy said:
Cross posted in your main thread

Is the bios up to date?
If so, then I would suspect that the CPU has a weak memory controller that can't do 6000 mhz.
It's rare, but can happen unfortunately and sounds like you may have lost the silicon lottery
Click to expand...

Yes, the BIOS is up to date. If that's the case that really sucks
 
Expo is an over clock and technically not guaranteed. Have you tried running at a lower speed like 5600?
 
Quartz said:
Expo is an over clock and technically not guaranteed. Have you tried running at a lower speed like 5600?
Click to expand...

I'll try that shortly

Just to be clear, when I turn EXPO on and leave the bios, yes it does hang on a black screen until I turn the PC off, but if I go back into the BIOS after I've turned the PC off the EXPO profile is enabled as it should be and the PC boots fine from there on after. Could this just be an issue with the initial memory training?
 
Once windows has loaded can you restart?

Sounds like my issues that I have learnt to live with is with EXPO enabled the PC wont restart. Cold boot is fine, but a restart is just a black screen so need to hold power button down till it powers down then switch it on again. Windows updates are a pain in the ass but as I don't reboot often I don't worry about it. Longest left it was overnight once, windows updates needed so set to install and shutdown but of course it wanted to restart so off I went to bed expecting it to shutdown but it just kept running all night

Oh and I bricked the bios when I tried to update it as it needed to restart then as well
 
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Well there are 2 options, one more nefarious than the other
1) return the CPU and get a new one
2) enable expo and downclock the memory to 5600mhz and see
 
Unfortunately, running into issues again. Turned the system on this morning, left it idle, came back to this error message

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This was with EXPO on... I've disabled it again now and left the RAM running at stock. I do have a replacement set of RAM on the way just in case... Not sure what else to do here

Found another thread with people reporting the same issues I had initially with my motherboard where I just couldn't get the RAM training to complete

[solved] B650M/HDV.M2 BIOS memory stability issues

I was finally able to get it to train (screen was black for a few minutes during training). After training,...
forum.asrock.com forum.asrock.com

Might have to look at returning the board and getting a different one

Going to try running the RAM at 1.4v to see if that helps any. Apparently this particular motherboard has a voltage bug when running at 1.35v
 
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I've done some searching around looking at other motherboard QVL lists, and my particular RAM, CORSAIR VENGEANCE DDR5 RAM 32GB 6000MHz CL36-44-44-96 1.35V (CMK32GX5M2E6000Z36), is rated as 1.35v on Corsairs websites, but on all the QVL lists I've seen that have this particular RAM listed, they have it rated at 1.4v.

Anyway, I manually upped the RAM voltage to 1.4v and so far, so good. The replacement RAM I've got on the way is CL30 rated at 1.4v, so hopefully the EXPO profile has it automatic at the correct voltage

I can't load any game with EXPO on without Easy Anti Cheat giving me an error, if I turn EXPO off the games load fine. Clearly and issue. Going to have to wait for this other set of RAM tomorrow and then take it from there, if the same thing occurs I'll RMA the motherboard and go for something else
 
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