Enabling EXPO profile causes black screen after leaving BIOS

Drake5

Drake5

Drake5

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Joined
12 Dec 2005
Posts
14,552
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
 
tamzzy said:
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
Click to expand...

I think we're all good now. I reset the BIOS, disabled iGPU and enabled EXPO and it booted out the bios without any issue. Hoping it stays that way
 
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