Question DRAM error, no post after upgrade.

[8 Bit Pyro]

Specs
Motherboard: MSI B450 Gaming Plus Max
CPU: Ryzen 5 5600x/Ryzen 7 5700x3D
GPU: RTX 4070 Super
RAM: G.SKILL Ripjaw V DDR4 3200 16x2
Power Supply: EVGA Supernova 850W
Storage: Samsung 970 Evo Plus M.2 2 TB + Samsung 870 Evo 2 TB

I have upgraded my CPU from a Ryzen 5 5600x to a Ryzen 7 5700x3D, no other components were changed in this process. Computer did not post, so I reset CMOS, which changed nothing. I then checked my RAM one stick at a time just in case to no avail. I then saw online that it might be because of my motherboard's BIOS being updated. I believed that mine was, but I tried to install the latest version via Q-flash+ before changing back to my old CPU anyways. This did not work and I was unable to get the motherboard to recognize the USB, indicated by three flashes and it hanging on the third until restarted. I then gave up on getting the new CPU to work and went through the hassle of reinstalling the old CPU. This also did not post and I became worried that something else had gone wrong. I tried resetting the CMOS again and it still didn't post. I then took apart the entire computer and rebuilt it again only to have the same issue. And now here I am, posting on a forum for any other suggestions before I end up buying a new motherboard before switching to AM5.

 

[Lutfij]

Welcome to the forums, newcomer!

If you look around the forums here(and other forums) you'll see people who moved to the Ryzen X3D for theAM4 platform have encountered a near similar issue, some were no POST scenarios.

I tried to install the latest version via Q-flash+ before changing back to my old CPU anyways. This did not work and I was unable to get the motherboard to recognize the USB, indicated by three flashes and it hanging on the third until restarted.
Give this guide a whirl;

View: https://youtu.be/cU7ZMmSmu20

you might want to use an older pen drive and format it to FAT32.

 

[8 Bit Pyro]

Thank you for trying to help, I have already followed this video and tried with two different drives only for the motherboard to hang on the third flash. I am also having no post after switching back to my older CPU.

 

[8 Bit Pyro]

After reinstalling the new CPU and attempting to follow the video again, I was able to get q-flash+ to work. I am now unable to turn off the computer and the CPU error light is on at all times. I don't believe the power button is the problem since it was just working and the pc attempts to turn on anytime the PSU is allowing power. What has gone wrong now? I will wait for a reply before changing anything else with the pc.