Thank you for the response! I will work my way through the list and respond as i follow your steps:
(1)https://www.microsoft.com/en-us/software-download/windows10
Download Windows 10 - This is always the latest finalized Windows version, currently 21H2.
Download MediaCreationTool21H2.exe & run it to make a Windows 10 Installation USB drive or burn an .iso to DVD. Follow the instructions under "Using the tool to create installation media". As it says, match it to the Language, & Architecture(x64/64-bit or x86/32-bit) of the computer on which it will be used. The Windows Editionto take is "Windows 10", which includes both Home & Pro.
R(1) I downloaded MediaCreationTool21H2.exe to make the USB drive, created the installation media, matched it to the architecture (x64), and selected Win10.
(2) Then, to boot it...
You need to press an F-key during boot to get to the BIOS Boot Menu. If you don't know it...
Get access to BIOS settings & Boot Menu: F-keys/Hotkeys by System Manufacturer (OEM)
Note: That is an informative 3rd-party site. But I know nothing (bad or good) of any downloads or links that are there.
(a) Insert the DVD or plug in the USB Installation media.
(b) Bootor reboot the computer.
(c) Press & hold the F-key at the manufacturer's logo (or at the black screen just before the logo).
If the key was pressed in time, mine shows activity at the bottom of the screen,
& the BIOS Boot menu soon shows up.
(d) From the BIOS Boot Menu, choose the "UEFI" option for the media, if offered.
Mine names the device brand & precedes it with "UEFI:".
(e) If it were a DVD inserted, you get a message to "Press any key" to boot it.
If not pressed in time, the DVD will be bypassed & Windows will try to boot.
(f) When the Installation media boots, select "Repair your computer" instead of to install.
The computer will reboot to the Recovery Environment at the "Choose an Option" screen.
R(2) It was F11 for me. I restored defaults on via my BIOS (MSI Click BIOS 5). (a) Did so via a USB3 port (b) rebooted (c) loaded menu (d) chose the UEFI option (in my case UEFI: General UDisk 5.00 Partition 1). Unfortunately, that just brings up a smaller version of the basic loadscreen and the circle of dots just spins forever.
(3)
(a) Do you know whether you've got a UEFI or Legacy install?
(b) Which was BIOS set for after you reset it to defaults?
(c) Did you try turning off Fast Boot or Fast Startup as Greg suggested?
(d) Are the USB ports enabled in BIOS (if it's got that setting)?
(e) Is SATA set to AHCI, especially if a Legacy install?
R(3)
a: I am not sure but I have tried both options both in terms of BIOS settings as well as in terms of setup options (on rufus mbr/gpt)
b: after resetting to defaults it says UEFI & Lefacy
c: Fast boot and fast startup are disabled
d: I did not enable it in BIOS but its detected in the boot menu so I assume it works (i think but im not sure)
e: SATA is set to AHCI, i also tried RAID in one of my attempts but that didnt fix it either.