cpu – MSI X570 Motherboard with AMD 5 and 7 series APU Error Unable to display Graphics

I have purchase MSI MPG X570 Gaming Edge Wifi Motherboard and want to use it with either Ryzen 5 5600G and Ryzen 7 5700G. I have already install CPU 8×2 16GB RAM M.2 drive on the motherboard because both CPUs have built Graphics cards therefore I have not install GPU in my system

When I boot up the motherboard 1st problem I counter is there is no Video Output and EZ CPU Error light was solid red.

I removed Ryzen 7 5700G CPU and replace it with Ryzen 5 5600G but still, there was no video output, and the CPU EZ Error light was still ON,

I change the Motherboard and then tried the same practice with 2nd motherboard with the same components but the result is still the same.

I remove M.2, one RAM stick from the 4th slot, and try to boot the system up still no luck

I remove the battery to clear CMOS and shorten the CMOS jumper to clear CMOS then I download Bios from MSI’s official website extract and put all files in the USB drive’s root and rename the configuration file with MSI.ROM as instructed in MSI support email then insert the USB drive in Bios update USB port Restart the system still no video output then press the reset Bios button to flash Bios from the system, light on my USB drive flashed a couple of times means the system is reading from the USB drive. when all stoped I restart the system again to check if Bios is updated and I may get some sort of GUI or command line prompt where I can begin to install my OS in my system but when it’s turned on there was still no video output.

if any of you have similar problems with the same CPU/APUs please guide me how can I make my PC work