regarding virtualbox abd BIOS settings.
I have downloaded Virtual Box, but there is a message of "invalid settings detected" with the description:
"System Acceleration Settings: The hardware virtualization is enabled in the Acceleration section of the system although it is not supported from the host system. It should be disabled in order to start the visual system."
The solution is to open BIOS settings during reboot and do some changes but I am not able to open the BIOS settings by pressing F2.