From your OP, I can only assume that you were trying to reinstall/repair over an existing OS. Now, your only hope is either to reinitialize the reinstall from the OS disk or repair menu, and write ...

While performing the Clean Installation of Windows, you must select a hard drive partition on which you want to install Windows. The selected hard drive partition should be empty; otherwise, ...

While installing Windows 11/10 on Hyper-V, if you get Windows could not complete the installation error, you can follow these solutions. Although this error doesn’t ...