Modern computers don’t have DVD drives anymore. To install Windows 10 on a new system you need to place the Windows 10 installation media on a bootable USB drive. To prepare the bootable USB drive you need a working computer with Windows 10.
- Insert a USB drive into your old computer (all files will be deleted)
- Navigate to https://www.microsoft.com/en-us/software-download/windows10 and click the Download tool now button to download the media creator tool
- Follow the instructions on the page to prepare the bootable USB drive