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I have an Laptop with an Aptio-BIOS and OEM Windows 8. My Harddrive is defect but warranty expired. So I bought a new Harddrive, built it in and now I´m trying to install Windows 8 from an original Windows 8 Setup-Disc. Every time I start the Laptop the BIOS-setup comes up. Now I achieved the boot menu, but the only Boot option is

UEFI: IP4 Realtek Ethernet Controller

How can I boot from the Setup-Disc?

EDIT: After activating CSM the setup still comes up and I´m still unable to boot from cd.

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See if there's an option to turn off secure boot. If that doesn't help, see if you can enable the "legacy BIOS" or "Compatibility Support Module (CSM)". – Karan Mar 7 at 1:49
after activating csm the setup still comes up – Paedow Mar 9 at 16:15

1 Answer

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You should disable "fastboot mode" and restart before being able to see "Boot device priority"/"Boot override" : you should then see boot priority options

If you find other problems booting try setting "secure boot mode" to CMS

source : http://www.ockwebs.com/2012/08/aptio-bios-usb-boot/

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