difficult time installing windows 10 on my vista machine - Microsoft Community

im having difficult time installing windows 10 purchased today on widows vista pcim having difficult time installing windows 10 purchased today on widows vista pc

vista users have perform custom install, attempt start windows 10 installation in legacy versions of windows will trigger following error message:

learn more: how to: custom installation of windows

also keep in mind, rollback function in windows 10 not support custom installs, if decide want go windows vista, have reinstall using original reinstall media. try creating backup of installation if matters you. if running windows vista business, ultimate or enterprise, can use built in complete pc backup create system image of installation. users running editions such starter, home basic or home premium, need use third party utility such easeus todo backup (free).

review instructions how configure bios:

bios/uefi setup guide: boot cd, dvd, usb drive or sd card

also:

windows vista support ends april 2017 - options?

Windows / Windows 10 / Install, upgrade, & activate / PC