After upgrading to windows 8 64bit Pro from windows 7 64bit Pro i'm unable to access the BIOS.
I have searched the web and the general consensus seems to be, you need to do two things to correct the issue:
1. Disable fast start-up
2. select advanced start up under 'general settings', restarting and then choosing UEFI
I have tried both of these options and neither has helped. Disabling fast start-up seems to have made no obvious change. When using advanced start up, Selecting the UEFI option under advanced options is not possible, as it doesn't exist!