For your own safety, please do not post personal details such as email address on public forums.
UEFI boots so fast most people miss their chance. For Vaio you need the F2 key.
Try starting from powered off, Hold the F2 key and tap the power button. Hopefully this gets you in. It works (except with F4) on my Dell.
If you need additional help or have more questions or details to share, please join the site so you can reply in this thread. See
this link for instructions on how to join Windows Central.