Burn the ISO to DVD using Imgburn at 4x speed with Verify - it never fails.
Boot DVD, select Custom install, use Drive tools to delete partition(s), create new one(s) as you wish, format before installing to first partition.
DVD will scan HD to see old OS, passing flag to allow Upgrade version key.
Installer is nearly driver
complete, with newer ones arriving quickly via optional Windows Updates. Then any missing drivers
can be found along with favorite apps on the Support Downloads webpage for your model cmoptuer/device.