Open BIOS on Vaio Laptop 

In my case it didn't work. was excited cause i have the exact same laptop. with the laptop off, hold assist button and you get into VaioCare Rescue Mode, where i pressed f2 to get into bios

Thanks bud. It worked.

Thanks bro you helped alot

What was loaded in the pendrive. could you please share the link.

Thanks, it works.

F2 it worked

Thanks bro

By clicking on assist button itself mine laptop starts

mine is not booting tried, f2 f9 f10 f11 f12, esc all things