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How to downgrade UEFI W8 laptop to W7

Please advice. Lenovo B575e notebook. I need to install Windows 7 to factory preinstalled Windows 8 Lenovo UEFI laptop. Installation media W7 Pro OEM DVD from internal DVD drive. Likely there is no need to restore Windows 8 later - so just a clean Windows 7 installation. Is it correct just to Disable Secure boot in Bios? Or is there something else requirements?

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