Problem with reboots when EXPO is enabled

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fredrik8801

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Hello!

I have a recurring problem that I can't seem to solve on my own and hope I can get some help here.

I am experiencing problems with reboots when EXPO is enabled.

If the PC has been turned off, it will start as it should.

The problem only applies to reboots (installing updates is a nightmare).

I have had the system for almost a year, everything works except that it is not possible to reboot.
At reboot it gets stuck on the yellow LED which indicates that RAM could not be detected or failed. Left the system on for about an hour, no change.

Ran memtest with zero issues.

I flashed the latest BIOS 7D67v1E9(Beta version) yesterday but that did not solve my problem.
PC Specs:
CPU: 7800X3D
MB: PRO X670-P WIFI
MEM: Corsair 32GB (2x16GB) DDR5 6000MHz CL30 Vengeance RGB AMD EXPO (CMH32GX5M2B6000Z30K)
GPU: RTX 3080
NVMe: 2x Samsung 970 EVO

Best regards, Fredrik
 
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Enable Power down mode in Memory as well as Memory Contex Restore
1710598809773.png
 
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fredrik8801 said:
I just tried the settings you suggested. Unfortunately, the problem still remains. I waited about an hour but the system is stuck with yellow LED.
After power cycle, the computer boots but gets stuck if you choose to restart the system again.
Click to expand...
I also have this problem. I have a 7600X and there is currently no solution. The problem may lie in the CPU IMC.
 
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fredrik8801 said:
I just tried the settings you suggested. Unfortunately, the problem still remains. I waited about an hour but the system is stuck with yellow LED.
After power cycle, the computer boots but gets stuck if you choose to restart the system again.
Click to expand...
mits181x said:
I also have this problem. I have a 7600X and there is currently no solution. The problem may lie in the CPU IMC.
Click to expand...
If you are willing to try something a bit fiddly with the BIOS setting you can go and set all the Memory Timings manually
Is not too much of a hassle as once you post into BIOS with EXPO enabled just duplicate the timings with what is already shown

Memory Contex Restore and Power Down must be enabled if you do this

Just copy all setting if column A to Colum B Leave Misc Item on Auto except Power Down set it to Enabled
1710645856838.png
1710645744038.png
 
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Alan J T said:
If you are willing to try something a bit fiddly with the BIOS setting you can go and set all the Memory Timings manually
Is not too much of a hassle as once you post into BIOS with EXPO enabled just duplicate the timings with what is already shown

Memory Contex Restore and Power Down must be enabled if you do this

Just copy all setting if column A to Colum B Leave Misc Item on Auto except Power Down set it to Enabled
View attachment 186343View attachment 186342
Click to expand...

Alan J T said:
If you are willing to try something a bit fiddly with the BIOS setting you can go and set all the Memory Timings manually
Is not too much of a hassle as once you post into BIOS with EXPO enabled just duplicate the timings with what is already shown

Memory Contex Restore and Power Down must be enabled if you do this

Just copy all setting if column A to Colum B Leave Misc Item on Auto except Power Down set it to Enabled
View attachment 186343View attachment 186342
Click to expand...
When I set up a new computer, I had no problem opening EXPO. After using it for a few months, this problem suddenly appeared. This method is no longer suitable for me because I have installed Kingston 4*16 (64G). When I change the cl parameter, the computer will It is unstable, and the voltage adjustment cannot be stable. Now I can only use 4800mhz to operate and adjust flck so that the performance will not lose too much to 6000mhz. I tried all the methods before when the memory was 2*16, but MSI provided all the methods and could not solve it. Finally, MSI suggested that I try changing the CPU.
 
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Had the same issue fixed it by changing these settings - Enable EXPO 6000mhz first then applied these settings CPU NB/SoC Voltage to 1.2 (Override Mode) if it still doesn't boot try settings between 1.1 and 1.25.
 
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Alan J T said:
If you are willing to try something a bit fiddly with the BIOS setting you can go and set all the Memory Timings manually
Is not too much of a hassle as once you post into BIOS with EXPO enabled just duplicate the timings with what is already shown

Memory Contex Restore and Power Down must be enabled if you do this

Just copy all setting if column A to Colum B Leave Misc Item on Auto except Power Down set it to Enabled
View attachment 186343View attachment 186342
Click to expand...
Thank you! This solved my problem!

DRAM Settings
EXPO: Disabled
DRAM Frequency: 6000
Memory Context Restore: Enabled

Voltage Setting
Override CPU NB/SoC Voltage: 1.3000 V
DRAM Voltage: 1.400 V
DRAM VDDQ Voltage: 1.400 V
DRAM VPP Voltage: 1.950 V
CPU VDDIO Voltage: 1.400 V

Advanced DRAM Configuration
Main Timing Configuration
tCL: 30
tRCD: 36
tRP: 36
tRAS: 76
tRC: 112
tWR: 90
tRFC1: 884
tRFC2: 480
tRFCSB: 390
tREFI: 11677

Sub Timing Configuration
tRTP: 23
tRRDL: 15
tRRDS: 8
tFAW: 32
tWTRL: 30
tWTRS: 8

Turn Around Timing Configuration
tRDRDSCL: 8
tRDRDSC: 1
tRDRDSD: 8
tWRWRSCL: 23
tWRWRSC: 1
tWRWRSD: 15
tWRWRDD: 15
tWRRD: 8
tRDWR: 21

Misc Item
Power Down Enable: Enabled
 
Last edited:
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floepie0154002d9 said:
Out of intense curiosity, why would it be necessary to enable these two settings when manually entering/copying the memory timings? I read having these settings enabled can often introduce instability?
Click to expand...
Memory Context Restore is used to reduce the boot times.
Downside of having this option on is that it introduces a great chance of windows instability.
You fix that windows instability with Power Down enable.

Or you are happy with how fast you open your PC to windows desktop and you don't mess with any of those options, depending on ram kits size and bios version, mainboard brand and kinda luck you can have decent boot times without those options on.
PS: disabled EXPO and just running at default 4800 MT/s will give you a fast boot with no need of Memory Context Restore and Power Down.
 
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I have same issue but with Kingston 6400 C32 2x16GB
I tried this fix but no go cold boot is now 5sec bit restart still lead to yellow led light
MSI tomahawk B650
7950x
kingston kf564c32rsk2-32
I am using profile 2 as 1 is not stable so the one on 6000Mhz but still issue with yellow crap
antek 1200W psu
RX7900xtx
 
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reb0rn said:
I have same issue but with Kingston 6400 C32 2x16GB
I tried this fix but no go cold boot is now 5sec bit restart still lead to yellow led light
I am using profile 2 as 1 is not stable so the one on 6000Mhz but still issue with yellow crap
Click to expand...
Ok so you tried the manual ram overclock possible fix but did you do it for the 6000 profile, copy / pasting the timings and etc for that one because I'm telling you that 99% of the chips out there won't reach 6400 fully stable. There is a reason why the 'sweet spot' is 6000 for this first gen AM5.

Also maybe try older bios with AGESA ComboPI 1.0.0.7c Version: 7D75v17 this one is older but more stable then this new ones that are more miss then hit.
 
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I am using profile 2 which is 6000Mhz, profile 1 (6400) was not stable with 6 month old bios, current bios is latest
 
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reb0rn said:
I am using profile 2 which is 6000Mhz, profile 1 (6400) was not stable with 6 month old bios, current bios is latest
Click to expand...
Ok, but when you tried the 'fix' aka putting manual timings from a to z what settings did you copy ? Hope you copy pasted the 6000 profile ones and did it all right by disabling expo, entering the timings, the sub timings, the DRAM Voltage the SoC Voltage etc everything need it because if you just wrote down the values for the 6400 profile those for sure have way less chances of success.

Again for complete understanding this is the possible fix that you need to do for your own ram kit and choosing the 6000 profile to copy paste the values:
 
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reb0rn said:
I am using profile 2 which is 6000Mhz, profile 1 (6400) was not stable with 6 month old bios, current bios is latest
Click to expand...
Instead of manually putting timings, you could try enabling profile 2 (6000Mhz)

Then...

Enable - Power down
Enable - Memory context restore
Override - CPU NB/SoC Voltage - try between 1.1 and 1.25
Manually set Dram voltage - 1.350 up to its max.

Trial and error see if it fixes your reboot problem.
 
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garybb said:
Instead of manually putting timings, you could try enabling profile 2 (6000Mhz)

Then...

Enable - Power down
Enable - Memory context restore
Override - CPU NB/SoC Voltage - try between 1.1 and 1.25
Manually set Dram voltage - 1.350 up to its max.

Trial and error see if it fixes your reboot problem.
Click to expand...
I have tried it, but I don't have a success. The result is random for power off or reboot.
It's looks like BDSM, sorry for the analogy.
 
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garybb said:
Instead of manually putting timings, you could try enabling profile 2 (6000Mhz)

Then...

Enable - Power down
Enable - Memory context restore
Override - CPU NB/SoC Voltage - try between 1.1 and 1.25
Manually set Dram voltage - 1.350 up to its max.

Trial and error see if it fixes your reboot problem.
Click to expand...
I have tried that, and its same
 
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reb0rn said:
I have tried that, and its same
Click to expand...
This was the only way I could fix my reboot issue.

Example I found that 1.2 CPU NB/SoC Voltage is stable no issues but anything below or above can cause issues.

I tested a few ways and this was the best way I found.

Its a tricky one.
 
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