Windows 11

Windows 11 in a virtual machine

Which immediately appears to work differently than with Windows 10

Install Windows 11 on a desktop or laptop with a Legacy BIOS without Secure Boot and TPM 2.

To install Windows 11 on a PC or laptop it is required that you have a UEFI bios (secure boot) and a Trusted Platform Module (TPM) on the motherboard.

Many somewhat older machines have a normal Legacy bios and no TPM.
If you run the systemcheck to find out if your machine is suitable for Windows 11 you may see this.

There is a way to get around that.
You can download an iso of Windows 11 to make a bootable USB stick with Rufus.

You cannot upgrade the existing installation.
Only perform a new clean install.
Use a different hard drive if you have one.
Or copy the files you want to keep first and then use the existing disk

Go to https://rufus.ie/en/

You don't have to install Rufus.
It's a self executable.
Put it on your desktop.

Put a USB stick of at least 8 GB into your machine.
Click on Rufus (this is version 4.4).

Here you choose normal MBR, master boot record, for a machine without secure bios.
If you do have a secure bios then you need to change MBR to GPT.
You can still use MBR for a machine with secure bios.
Then you have to set secure boot to disabled in the bios itself.
And find out if you can click on legacy somewhere.
If the machine indicates no bootable device found after installation, you should see if you need to change anything else until W11 starts properly.
There can be the problem that the bios battery runs out and then everything is reset to the default option.
Therefore, it is recommended to indicate that information on the side of the dektop or the bottom of the laptop.

If no bootable device found
Bios: Secure boot disabled
Legacy enabled.

Start Rufus

Select, browse to that downloaded iso.
Click start, select what you want and choose username and OK.

If that USB flash drive is ready then you can boot the machine from that.
When you get here:

Do not upgrade, but click on the 2nd option below (custom)

After the installation, you will have another chance to set the correct region and install the correct keyboard.
If that should be English, choose US keyboard.

You may still have to enter an M$ account to continue.
We need to bypass that.

When you get to the point of having to specify a Microsoft account.
Shift + F10
Type CMD in the search box
Right mouse over that black square and run as administrator
Type: ooBeBypassNRO (all letter, no numbers)

Then you get to the point again where you have to specify a Microsoft account

But then you can specify: i have no internet
Continue with limitid options.