Downgrading OS Samsung notebook

rotten mac

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Feb 17, 2010
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18,510
Hi guys.. I have samsung np900x4d, series9. It has pre installed windows8, but i like to downgrade it to windows7... I can't make it to boot in my external dvdrom with win7 cd... What can be the solution to this? thanks in advance
 

Paul NZ

Admirable
Does the external appear in the BIOS to boot from?. And is it USB 2 or 3? If it's plugged into a USB 3 port plug it into the USB 2 port.

And since it had Windows 8 on it, you may have to disable secureboot in the BIOS if it's there. Since Windows 7 (I think) doesnt support Secureboot
 

rotten mac

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Feb 17, 2010
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18,510



yes its detected on the bios, it appears in the boot priority option(which i make the 1st option)... and i also disable secureboot