Question Messed up booting with "Maximum memory" setting in msconfig

[Djoks31]

Bought a new RAM memory (2x8gb) and after installation I noticed that system uses only one stick of memory (8gb). Found on internet solution to set "Maximum memory" setting in msconfig to something else than default, and it was automatically set to full RAM capacity.
After that I couldn't boot my PC, it was stuck on Windows logo. Tried to reinstall Windows but it can't finish installation, and Windows isn't fully installed either. Now I can't remove that "Maximum memory" setting I set because and can't install new Windows.

CPU: Ryzen 3 2200G
MOBO: Biostar A320MH
GPU: Vega 8 Integrated
RAM: 16GB Kingston Fury Beast 2666MHz
OS: Microsoft 10 Pro

 

[Djoks31]

My thought was that maybe GPU now don't have allocated memory to work, but I don't know how to fix it

 

[SkyNetRising]

Boot from windows installation media and fix bootloader.
You have to remove truncatememory value.

bcdedit /deletevalue {default} truncatememory

It may be necessary to specify BCD store.
First assign letter to bootloader partition.

diskpart​

list disk​

select disk 0​

(If you have only a single disk, then it will be disk 0. If you have multiple disks, then you'll have to find corect disk number.)​

list partition​

select partition x​

(select bootloader partition. Usually it's a small 100-500MB partition. Recovery partition is not bootloader partition.)​

assign letter=S​

exit​

Then specify BCD store:
(for legacy/csm boot)

bcdedit /store S:\boot\BCD /deletevalue {default} truncatememory​

(for UEFI boot)

bcdedit /store S:\EFI\Microsoft\Boot\BCD /deletevalue {default} truncatememory​

 

[Djoks31]

Boot from windows installation media and fix bootloader.
You have to remove truncatememory value.

bcdedit /deletevalue {default} truncatememory

It may be necessary to specify BCD store.
First assign letter to bootloader partition.

diskpart​

list disk​

select disk 0​

(If you have only a single disk, then it will be disk 0. If you have multiple disks, then you'll have to find corect disk number.)​

list partition​

select partition x​

(select bootloader partition. Usually it's a small 100-500MB partition. Recovery partition is not bootloader partition.)​

assign letter=S​

exit​

Then specify BCD store:
(for legacy/csm boot)

bcdedit /store S:\boot\BCD /deletevalue {default} truncatememory​

(for UEFI boot)

bcdedit /store S:\EFI\Microsoft\Boot\BCD /deletevalue {default} truncatememory​

When I try to assign letter it says:
"There is no volume specified. Please select a volume and try again."
I selected partition with "Reserved" type, size 16mb. There is 523mb partition but it's "Recovery" type

 

[SkyNetRising]

I selected partition with "Reserved" type, size 16mb. There is 523mb partition but it's "Recovery" type

Wrong partition selected. It definitely will not be 16MB. 16MB is protective MBR partition.
You have to look for small (less than 500MB) Primary partition or EFI System partition.
Can you show a screenshot?
Execute following, make a screenshot, upload to imgur.com and post link.

diskpart​

list disk​

select disk 0​

list partition​

list volume​

If you have more than one disk connected then also

select disk 1​

list partition​

select disk 2​

list partition​

...​

select disk n​

list partition​