If you enter Recovery Menu, then Drop to prompt, you can enter installation commands.
I’m sorry but how do I enter the recovery menu? I’m still pretty new to Linux
Reboot and when you see the Motherboard splash screen, begin tapping the esc key.
On older systems, it is left shift key.
It is something that may take a couple of tries...
Recovery mode wouldn’t boot so I managed to run the command with a virtual keyboard.
Sadly, nothing happened after I executed it.
Umm... I just now realized you are on LiveUSB. Not installed... Sorry for that.
What type of Computer- year, make and model?
No wonder, I was trying for two hours to boot it 
This is the model:
Ahhh... ok...
What is the output of:
cat /sys/class/dmi/id/chassis_type
(Use copy / paste)
The result is 31
Are you able to pull up Onboard using mouse and app menu?
That is the On Screen Keyboard.
Yes, I can
I was thinking that the system thinks your computer is a tablet and so, disabled the connected keyboard.
Now, I am not sure if this is a good lead or not given you two replies above...
So is there any way to fix this?
I have been researching and looking into it...
Will trying another Linux distro fix the problem by any chance?
It very well might. I do not know for sure since we are not sure what the issue is.
I have read quite a few things, but they all come back to what we have tried:
Installing xserver-xorg-input-all
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Aravisian returned with many battle scars. It truly is amazing, how far he went looking for the answer, a solution to your issue. But instead, he shall provide a tissue for your issue. We commend Aravisian for putting in much effort, by providing him many likes.
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Maybe installing the OS as dual boot (with Onboard) and then trying to fix the issue with the xserver thing will work? I think that’s worth a try (Dual boot because it’s not my PC and I better keep Windows in case it doesn’t work)
I never had this missing keyboard issue with Linux, but when I was a Hackintosh user, it was not unusual to lose built-in keyboard during the installation. My solution is to connect USB keyboard and fix the issue when installation finishes.
Along with USB WiFi and USB soundcard, USB keyboard is a useful tool to have when one decided to take non-Windows way of life (TM)
If you believe it is worth a try, then it is.
If it was me, I would try it.