Hello, I have tried everything on the internet to fix this but nothing helps:
I needed to put clean install of Windows on my laptop so I had downloaded the installation from microsoft and had putten it onto an usb drive. From there I installed the windows. After the installation was done (I have chosen my main ssd - I have SSDs on both slots) the installation window has restarted to the first page. I tried installing it all over again and so on. If I try pulling out the usb I get the "default boot device missing or boot failed" message.
In BIOS boot section there is nothing but "Windows boot manager" and I can't switch from UEFI to Legacy as there is no other option apart from UEFI.
In CMD I tried activating the disc partition to the correct one but i get "selected disk is not fixed mbr disk" mesaage.
I am starting to get a little insane with this and also kinda desperate.
Thank you for any help!