Problem with reboots when EXPO is enabled

[fredrik8801]

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

 

[gidodonga15c902ed]

I was having trouble waking up from sleep and rebooting with my x670e tomahawk. I set the NB/SoC voltage to 1.2V and was able to reboot. However, waking up from sleep still failed.
I also tried disabling EXPO and overclocking the DRAM, but neither helped with the sleep issue.

 

[divyanshsharma194719412a902a6]

Hello guys, I did what "fredrik8801" did.

Thank you! This solved my problem, with yellow led after restarting and no boot from restart.
Shutdown/ power-on was ok from the begging.
Note for beginners like me, after you set override for CPU you have to type the number manually there isn't going to be an option to select from, also for the others, just type the numbers by hand.

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.
Also here is another setting that i don't remember the name but i also put that as the others,
that i copied from the left row.
tRDRDSCL: 8
tRDRDSC: 1
tRDRDSD: 8
tWRWRSCL: 23
tWRWRSC: 1
tWRWRSD: 15
tWRWRDD: 15
tWRRD: 8
tRDWR: 21

Misc Item
Power Down Enable: Enabled

BIOS: 7E16v193(Beta version)
PC Specs:
CPU: AMD Ryzen 7 7800X3D
MB: MSI X670E GAMING PLUS WIFI (MS-7E16)
MEM: Corsair 64GB (2x32GB) DDR5 6000MHz CL30 Vengeance RGB AMD EXPO (CMH64GX5M2B6000Z30)
GPU: GIGABYTE GeForce RTX 4070 Ti SUPER AERO OC 16G (GV-N407TSAERO OC-16GD)
NVMe: Lexar SSD NM790 4TB


Thank you!

Unfortunately didn't fix my issue. Sleep mode is still broken

 

[jkoo15aa02de]

Setting the NB/SoC voltage to 1.2V worked. However, now that the voltage has been set at that, my usb devices are now unstable and intermittently disconnect (wireless mouse, keyboard, and headset). Any solution for this as well? Still unsure whats causing the need to manually set voltage. My current theory is a windows update broke how the mb talks to the rest of the system and not enough voltage is being used causing the hanging of the system on reboot (yellow light and constant cycling to reboot sound going off-high pitched squeak noise for me)

 

[jkoo15aa02de]

For anyone who is still having the same problem: setting CPU NB/SoC Voltage to 1.2 in BIOS solved it for me.

Procedure:
1. updated BIOS & left everything on default - rebooting worked
2. re-enabled EXPO and set CPU NB/SoC Voltage to 1.2 in "override mode" i.e. manually override what EXPO suggested for CPU NB/SoC Voltage
3. ran memtest86 for 8 hours to make sure RAM works nicely
4. re-booting now works like it should. no issues.

What's really weird: this build (MSI project zero B650M, G.Skill Flare X5 32GB Kit DDR5-6000 CL30, 7800X3D, ATX 3.1 PSU) ran perfectly for almost a year - 11 months - with the BIOS it came with out-of-the-box and EXPO before the re-booting issue occurred. I have no explanation whatsoever what changed or why this suddenly started to happen.

This is around when mine started doing the same thing. I'm wondering if its possible a windows update could have affected something at the bios level. I'm wondering if on reboot not enough voltage is used causing the "hanging". I have a similar setup (B650 Pro Wifi, GSkill X5 32 gb, 7700x). I posted this recently, but now that the voltage is set to 1.2, my usb devices are disconnecting at random times. Has this been an issue for you?

 

[4uo9jfu7157c02d9]

This is around when mine started doing the same thing. I'm wondering if its possible a windows update could have affected something at the bios level. I'm wondering if on reboot not enough voltage is used causing the "hanging". I have a similar setup (B650 Pro Wifi, GSkill X5 32 gb, 7700x). I posted this recently, but now that the voltage is set to 1.2, my usb devices are disconnecting at random times. Has this been an issue for you?

Sorry for the late reply.

No, USB is working fine, as it should. In fact I've not had a single hiccup whatsoever with my system after setting CPU NB/SoC Voltage.

 

[sebring_3155602d8]

Here are my settings, it works perfectly like this!

 

[labbetts2]

I had this exact problem this is what fixed it for me
Enable - Power down
Enable - Memory context restore
Override - CPU NB/SoC Voltage - 1.250