boot issue no bios post Normally working PC suddenly wont boot with RAM in all 4 slots

[FoxFire]

TL;DR: PC was working fine then after a restart and a trip to the bios later to tweak the fan curve and lower RAM clock speed, the PC wont boot with RAM in the 3&4 slots )but works in every other combination). Sometimes it will just go to a solid white LED on VGA and sit there forever.

 

 Greetings forum goers! I am having an issue with booting PC up, I recently got into VR but was having issues getting some games to run smoothly. I was having crashes frequently in steam VR and even a green screen of death(I sadly AM on the dev channel of windows insider, waiting for a new update to drop so I can escape the clutches of insider builds X.X ). I had my memory OCd to 2933 so I tried backing it back down to its stock clock of 2800 and adjusting a fan curve. This was when I couldn't boot up anymore at all. No beeps even. I looked at the debug LEDs and saw it was stuck with white VGA .
Things I have tried: Disconnecting all USB, removing GPU and trying to get different boot light, updating BIOS, resetting CMOS, testing each RAM stick individually in slot 2 (they all work fine AND it booted each time). Then I tried all different combinations of RAM in slots and verified that all slots worked. I then found that it wont boot when the 3&4 slots are populated no matter what. https://i.imgur.com/iJOm0JQ.png

I am very confused at the cause, is this a Motherboard issue? A CPU? Both are only a couple of months old and hadnt had any issues before. 
Any help or insight is greatly appreciated!

 

MY specs:

Windows 10 64
Asus Tuf B550 plus

Gigabyte GTX 1660 super OC

Gskill RipJaws 4 2800 4x8

Ryzen 7 5800x

Corsair CX750M

 

[Johnston]

did you change all the rams clock speed, if they're running at different speeds, the computer wouldnt be happy

[FoxFire]

I didnt change just one, they were all set the same. Also I have cleared the CMOS so all that would be reset.

[BlackManINC]

44 minutes ago, FoxFire said:

I didnt change just one, they were all set the same. Also I have cleared the CMOS so all that would be reset.

Maybe try changing the soc voltage or something. 

[FoxFire]

Up or down?

[BlackManINC]

21 minutes ago, FoxFire said:

Up or down?

Bring it up a little.

[FoxFire]

Very strange, but that worked! I bumped it to 1.334v and now its booting.I still would like to know why it suddenly needed more powa but oh well, time to run memtest Thanks for all your help!

[BlackManINC]

3 hours ago, FoxFire said:

Very strange, but that worked! I bumped it to 1.334v and now its booting.I still would like to know why it suddenly needed more powa but oh well, time to run memtest Thanks for all your help!

It worked? Well hot damn then..I just had a hunch because another dude had the same issue as yours, and increasing the SOC voltage was suggested. It has to do with things like the CPU's memory controller, which is of course related to the ram, so that's why it worked.