Is there a way to access BIOS on a used Lenovo Ideapad G580 2689 ?

[m654321]

Following the death of my Asus laptop, I swapped it with someone for a third-hand Lenovo Ideapad G580 model 2689 notebook. It has Win8.1 pre-installed in UEFI mode - I would like to dual-boot it with LL, in Legacy mode.

However I'm unable to access the BIOS or Boot Order to allow me to do this.
The 'novo' button doesn't work, only showing a menu with 4 options - clicking on any of the options and it just boots into the Win8.1 user account. Apparently the software that allows the 'novo' button to access BIOS or Boot Order, is on a partition of the drive that was originally shipped with this laptop - being a 3rd-hand laptop, my guess is that's long gone!

So I tried more conventional methods: F2 and F12 keys, and clicking on PC settings in the charms bar, choosing the Recovery etc option. However none of these work and it just boots into the Win8.1 user account. 

However, from the LL hardware database, I notice that LL has been installed on the Lenovo G580, but maybe these contained original drive to enable operation of the 'novo' button ... I also notice from hadrian's inxi -Fz terminal output, that he installed LL on a Lenovo G580.

Any ideas, send them this way before I throw this laptop in the bin  > > >