Need help for modify bios ldvs to hdmi

hey guys i have one aio pc dell xps 2720 who is with broken lcd and i want to modify his ami aptio bios bcs at moment prio display is lvds (integrated) and hdmi is not working till os is lodaded … the problem is that i cant seen bios setup and the second problem is that there is missing option for chipset
I has wondering will be possible to disable lvds and enable hdmi with AMIBCP ?