Bios Mods -The Best BIOS Update and Modification Source

I have Lenovo Think Pad T430i. It boots smoothly and works smoothly. But whenever I try to go into BIOS setup utility screen become blank and nothing shows up, I have to power off and start again.  I can change sequence of boot, I can test my hardware from from BIOS utility. Never went into the BIOS utility to see the options.

I tried with F1 and F12 Key but not success. Kindly somebody help me. I need to enable virtualization from the BIOS.

My BIOS version and company