That's correct - last option. But, you can't get past your boot issues - and now can't seem to get a working installation USB. Did you follow the instructions in the video and the written ones to make your installation USB? You have to use a USB disk that's 8GB or larger as per the instructions, btw.
Again, I have no idea what you are doing on your side - pictures or even a video would greatly help. Back and forth of the same things over and over is not getting anyone anywhere - does that make sense?
I have a major update on my OS Issue situation - I was unable to reinstall Win11 but instead have Win10 - but after completing the updates on Win10 I should be able to automatically upgrade to Win11.
But the issue now is I am getting an error whilst trying to get an update done.
@Z_123, this is certainly a very frustrating problem. For me, the last latest Windows I used was Windows 7. I have technically used Win 10 and 11 but only on someone elses machine in brief usage, nothing that really was in-depth and no troubleshooting.