[other_os] Samsung series 5 laptop problem linux mint

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http://ubuntuforums.org – I posted this on the linux mint boards aswell but there seems to be more users here for a faster awnser. Good day, So yesterday I got my new Samsung NP530U3C-A01SE laptop. I installed linux mint on it instantly via usb on the SSD hybrid part. Now I want to install windows on the non hybrid part. The problem is now I cant enter bios which is the f2 button because gnu grub loads to fast and the f2 push is not counted, even tried with an usb keyboard. Now my boot priority when I installed was usb so it should still be. But now it just ignores the usbs and they are powered off until Linux mi (Hardware)