I want to install a modified windows and I get an error

It means the Windows version you are trying to install lacks driver(s) for the hardware in use. Generally happens when trying to install an old legacy OS on modern h/w. First happened to me trying to transfer W95 onto a new PC and it was unable to cope with the massive size of a 2Gb HDD. Had to go out and buy WME upgrade.
Nowadays you have the option of creating a virtual machine on a modern Windows to emulate an environment that the legacy OS is happy with and run it that way rather than trying to install it.
 
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