I got an HP pavillion H8-1212c and i just bough a new graphic card (Geforce GTX 750 ti) when i install it, the computer bip and never booted. i have read on one of your thread that i should enable legacy support and disable secure boot in Bios. But when i go in my BIOS i don't have the option to disable secure boot. I have watch a few video on you tube and where they see the secure boot option, i dont see it. what can i do ? thanks.