Can't allocate 2gb of Ram to Ryzen APU aftering adding more ram to the system....

[brmi1998]

I have a Ryzen 5 2400G CPU/APU and I had 2x4 gb of 3000MHz ram installed. I just purchased 16 more gb in 2x8 same exact brand, speed, everything. When I installed it my PC turns on then off and keeps repeating this process and finally tells me something has changed with either the CPU or Memory and gives me the option to go into the BIOS or just use the default values of the BIOS. My problem is after adding this ram along with the restarting problem, I can now only allocate 1 gb of ram to APU to my ram for some reason... Any time I go into the BIOS to change it back to 2 gb it just reverts back to 1 after it saves and reboots. And yes I have updated the BIOS. Can someone please tell me what is going on and if I can fix it or will I just be at a loss of the 8gb I had before...

 

[CountMike]

Don't have to allocate any more, it will use as much as needed when needed.