If other software on your system is conflicting with the installer, a “clean boot” starts Windows with a minimal set of drivers and startup programs, which can help isolate the problem.
Save adjustments, exit, and re-attempt booting from your verified flash drive. could not load required file winsetup dll 0xc1 verified
The error code accompanied by the message "could not load required file winsetup.dll " typically indicates that your Windows installation media is corrupted or missing critical files. Core Reasons for the Error If other software on your system is conflicting
Fixing this error requires stepping out of the role of a user and into the role of an archeologist. One cannot simply "repair" the file because the system claims it is already verified and correct. The solution usually involves forcing the system to rethink its file structure. Core Reasons for the Error Fixing this error
If the error occurs because your local operating system core components are unstable, running built-in Windows diagnostic tools will restore missing dependencies.