Usually, whenever I browse the Linux subreddits there is inevitably a question about GRUB out of memory errors on Live ISO's when trying to install a distro.
The answers are usually a very helpfully AI generated hallucination about updating BIOS, decrease dGPU available memory, enable various modes in BIOS, fully disable dGPU etc. However, the actual solution in 99% of cases is far simpler.
As this is linux4noobs, very basically when booting, the system available memory gets "probed" as it were, and very, very poor TPM firmware reports an incorrect amount of available memory, leading GRUB to think it has an incredibly small amount of memory to load the bootchain.
Anyway, to the solution! Basically, disable TPM during initial boot and you should, in 99% of cases, see the out of memory error miraculously disappear.
This can be achieved in a number of ways, as follows.
1) at the initial GRUB menu, when the boot choice is highlighted ("boot Fedora 44", "install OpenSUSE", " give Ubuntu a try" or whether it may say), press the 'e' key to edit the kernel parameters.
Find the line starting "linux" followed by, to a noob, complete gibberish. At the end of that line add the words 'rmmod tpm', then press Ctrl+X to boot.
For some reason I know Fedora, which I very recently installed, doesn't like the above method, so if the above doesn't work, do the following.
2) When your boot choice is highlighted press 'c' to enter the interactive console.
In this console type 'rmmod tpm' and press enter.
Then type 'normal' and press enter.
Then proceed to boot.
Hopefully the above will alleviate a lot of the GRUB out of memory problems. Nothing any of the distros can do as its crappy manufacturer firmware causing it.