Cold Boot Issues, It shouldn't be this hard!

[EZTutty]

Back in June 2020 i built a System using an MSI B450 Gaming Plus Max and a Corsair TX550M   (rest of specs. 3700x, 2x8Gb DDR4 3600, 5700xt, NVME SSD + Sata SSD)

 

Pretty much from the start i had cold boot issues where the fans ect would spin up, but there would be no display and the MSI B450 board would show the CPU LED on the EZ Debug, but a couple of power cycles and it would start no problem. Did some googling and found that this is really common on that board (especially with XMP enabled for some reason) and i assumed there'd be a bois update to fix it at some point.

 

However recently the system started turning it's self off randomly, and was even more of a pain to cold boot than normal, several bios updates and bios setting changes fixed nothing, so i decided to ditch the MSI board and i ordered a Gigabyte B550 Aorus Elite V2.

 

Initially things were looking promising, until the next day when i booted from the system sitting overnight and i was greated with the same fans ect spinning, no RGB, no Display. A couple of power cycles got it started, but after a couple of minutes of running it randomly turned off while just sat idling on windows desktop. (A Setting in the Gigabyte Bios called 'Power Loading' seems to have fixed the random shut downs.)

 

Also i've found that if i let my computer sleep it won't start back up, again with the same fan spin, but not much else. (i've tried disabling Hybrid Sleep and Fast Boot ect). 

Occationally restarts have given the same issue, altho this is slightly better eith ErP turned off.

 

From my perspective given that i've tried another motherboard this is pointing at PSU, so i've ordered a Seasonic Focus GX 750w to try.

 

Am i missing something obvious? 

[EZTutty]

Just to note, i have tried the GPU and Memory in another system with no boot or sleep issues, unfortunately i don't have access to a system i can try the CPU in, but its highly unlikely to be the cause in this situation.... maybe?

[DoctorNick]

3 minutes ago, EZTutty said:

Back in June 2020 i built a System using an MSI B450 Gaming Plus Max and a Corsair TX550M   (rest of specs. 3700x, 2x8Gb DDR4 3600, 5700xt, NVME SSD + Sata SSD)

 

Pretty much from the start i had cold boot issues where the fans ect would spin up, but there would be no display and the MSI B450 board would show the CPU LED on the EZ Debug, but a couple of power cycles and it would start no problem. Did some googling and found that this is really common on that board (especially with XMP enabled for some reason) and i assumed there'd be a bois update to fix it at some point.

 

However recently the system started turning it's self off randomly, and was even more of a pain to cold boot than normal, several bios updates and bios setting changes fixed nothing, so i decided to ditch the MSI board and i ordered a Gigabyte B550 Aorus Elite V2.

 

Initially things were looking promising, until the next day when i booted from the system sitting overnight and i was greated with the same fans ect spinning, no RGB, no Display. When i did get it started after a couple of minutes of running it randomly turned off while on windows desktop. (A Setting in the Gigabyte Bios called 'Power Loading' seems to have fixed the random shut downs.)

 

Also i've found that if i let my computer sleep it won't start back up, again with the same fan spin, but not much else. (i've tried disabling Hybrid Sleep and Fast Boot ect). 

Occationally restarts have given the same issue, altho this is slightly better eith ErP turned off.

 

From my perspective given that i've tried another motherboard this is pointing at PSU, so i've ordered a Seasonic Focus GX 750w to try.

 

Am i missing something obvious? 

My budddy had this issue with his 5800x + B550 pro V2. The fix was Turn off PSU, remove cmos battery for 5 min. Remove any sata and USB device. Flash BIOS with USB flash drive. While no SATA or USB device is connected. Make sure the BISO is actually flashed, format USB drive to fat32 and dont rename the BIOS file. Should blink for 1-2 min or so and then stop after flash.

[EZTutty]

5 minutes ago, DoctorNick said:

My budddy had this issue with his 5800x + B550 pro V2. The fix was Turn off PSU, remove cmos battery for 5 min. Remove any sata and USB device. Flash BIOS with USB flash drive. While no SATA or USB device is connected. Make sure the BISO is actually flashed, format USB drive to fat32 and dont rename the BIOS file. Should blink for 1-2 min or so and then stop after flash.

Thats interesting, i did update to the latest bios, but via the BIOS GUI.

I will give that method a try, thanks.

[EZTutty]

Ok flashing the bios made no difference.

 

However backing off my memory speed to 3400 and slacking the timing off seems to help.

 

I'm using Patriot Viper 3600 cl17 memory and the voltage changes to the correct 1.35v with XMP enabled.

[EZTutty]

Fitted the seasonic PSU... No difference

 

Bought some Corsair LPX memory.... No difference.

 

 

So that's new Motherboard, New PSU, New Memory all the same. 

[EZTutty]

After further testing it seems the max Memory speed In can run is 2666 on both sets of memory and both motherboards

 

Weird CPU memory controller issue?

 

 

[EZTutty]

For anyone reading this or finds it in the future... Turned out to be the CPU.... Obviously I figured this out after replacing everything else.