Grub2 crash on Lubuntu 17.10

I’ve had this issue for about a week, and all the basics have been tried. The core of the issue may be Acer having messed up (according to the boards I’ve read) on the BIOS.

I’m in UEFI and there is no option to switch that. And I have tried.

I have gone through a ton of steps and here is where I am at now.

On a completely wiped hard drive i can liveUSB to an install that is eventually complete and does work except for grub2.

I can get it to boot to GRUB if I use the LiveUSB and escape out. But if I don’t use the USB key, I get “no bootable device.”

So.... using the thumbdrive, and the escape key, it “GRUBs”

Then, if I type the following (which came from here: https://help.ubuntu.com/community/Grub2/Troubleshooting), it will boot.

set pager=1
set prefix=(hd1,2)/boot/grub
set root=(hd1,1)
linux /boot/vmlinuz-4.13.0-16-generic root=/dev/sda1
initrd /boot/initrd.img-4.13.0-16-generic
boot

From there I have a working system. But I am out of luck it seems if I want to make that permanent (meaning, if not, then I always have to type that stuff at GRUB).

From there, I am looking at making things permanent.

Steps I have tried:
I can “update-grub” but on “grub-install /dev/sda” it freezes.

I can add the ppa and install and run boot-repair but again, on grub-install (which it always suggests as part of its steps) it freezes.

I can sudo pcmanfm into the etc/ files for grub and I can edit them....

So I am thinking if I can just maybe add the above lines (that I now manually type into grub)—perhaps into grub.cfg itself—then I can skip having to manually type those lines in each time.

Though I was worried that it resets itself on kernel update anyway.

Any thoughts?
Please.