from the /boot/config.txt file

#hdmi_safe=1
#disable_overscan=1

Overscans equal to 16

#framebuffer_width=1280
#framebuffer_height=720
#hdmi_force_hotplug=1
#hdmi_group=1
#hdmi_mode=1
#hdmi_drive=2
#config_hdmi_boost=4
#sdtv_mode=2

Is this sufficient? Thanks!